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1 ely dependent on dipolar interactions (or on hyperconjugation).
2  manner controlled by chelation and negative hyperconjugation.
3 ccurs in alkoxide anions as a consequence of hyperconjugation.
4 ic substituent effects such as resonance and hyperconjugation.
5 ron withdrawal by the fluorines, rather than hyperconjugation.
6 e planar) are evaluated in terms of negative hyperconjugation.
7 ruled by dipolar interactions rather than by hyperconjugation.
8  electronic ground-state destabilization via hyperconjugation.
9 allylic silane and stabilization of pi cc by hyperconjugation.
10 refrom, C[bond]OO* BDEs are also affected by hyperconjugation.
11 result of preferential stabilization through hyperconjugation.
12 rboxylates realized on the possible basis of hyperconjugation.
13 ands of the anions as well as intramolecular hyperconjugation.
14 sting both steric contraction and long-range hyperconjugation account for the observed (1)J(CH) pertu
15  background related to the relevant types of hyperconjugation and a brief historic outline of the ori
16 nformational preferences in terms of steric, hyperconjugation and dispersion effects.
17 d on the basis of sigma(C-H) --> sigma*(C-F) hyperconjugation and electrostatic interactions.
18 al nanochannels, in which the linkers induce hyperconjugation and inductive effects to stabilize the
19  delocalization through lateral X-H bonds (o-hyperconjugation and o-homoconjugation).
20  more pronounced indicates that the negative hyperconjugation and pi-resonance within the carboxylate
21 ocalization through lateral X-H bonds (sigma-hyperconjugation and sigma-homoconjugation).
22  of the Ni+1-H...Ni interaction ablates this hyperconjugation and thus induces an otherwise difficult
23 ough backbone X-X bonds (o-conjugation and o-hyperconjugation) and only weakly conformation-sensitive
24 kbone X-X bonds (sigma-conjugation and sigma-hyperconjugation) and only weakly conformation-sensitive
25 dicate that various structural (ring strain, hyperconjugation, anomeric effects) and environmental (b
26                              Conjugation and hyperconjugation are closely related stereoelectronic ef
27 stem decrease glycal reactivity via negative hyperconjugation as protecting group electron withdrawal
28 appears to occur primarily through a type of hyperconjugation, as demonstrated by a decrease in the b
29  conformation for ribose and relatively weak hyperconjugation at the transition state.
30 ns, probably arising from different types of hyperconjugation between lone electron pairs of nitrogen
31               A [methyl-3H(3)] KIE is due to hyperconjugation between np of sulfur and sigma* of meth
32                      It is hypothesized that hyperconjugation between the C4 C-N/O bond and the parti
33 n hydride transfer is thought to result from hyperconjugation between the carbonyl group and C-4 of t
34 specific beta-deuterium KIEs indicate strong hyperconjugation between the elongated glycosidic bond a
35 tate suggests that the 4'-(3)H KIE is due to hyperconjugation between the lone pair (n(p)) of O3' and
36 tions suggest that the 4'-3H KIE arises from hyperconjugation between the lonepair (n(p)) of O4' and
37  group, and the methyl-(3)H(3) KIE is due to hyperconjugation between the n(p) of sulfur and the sigm
38  (1) stereoelectronic interactions, notably, hyperconjugation between the oxygen lone pair and the ex
39                      In contrast, neglect of hyperconjugation can be deeply misleading as it removes
40                        For example, negative hyperconjugation can unleash the "underutilized" stereoe
41 drogen bonding (NCHB), likely resulting from hyperconjugation, can play a significant role in the car
42 ractions between antiperiplanar bonds (i.e., hyperconjugation) cannot overrule the repulsive forces b
43 on of this difference is consistent with C-H hyperconjugation conferring aromatic character on the ar
44                                              Hyperconjugation/conjugation through-bond stereoelectron
45                                         When hyperconjugation dominates, X[bond]H bond elongation is
46                                          The hyperconjugation effect in the substituted methyl borane
47 , due to intramolecular hydrogen bonding and hyperconjugation effects.
48 lanation given for this effect at present is hyperconjugation from the lone pairs on the ring heteroa
49 nduced weakening of the central C-C bond and hyperconjugation has been considered to be involved, but
50 n alpha-halogen atom that can participate in hyperconjugation has been shown to contribute to the str
51 s a conformational isomer stabilized through hyperconjugation (hyperconjomers).
52 g the earliest researchers studying negative hyperconjugation (i.e. the anomeric effect) or the prefe
53 damental knowledge about how conjugation and hyperconjugation impact the stabilization of nonbonding
54 econdary alkyl alpha-radicals via sigma(B-N) hyperconjugation in a manner that allows site-selective
55 s a chemical method to obtain insight on the hyperconjugation in hydrazide derivatives from solution
56 on of the omnipresent importance of negative hyperconjugation in oxygen-containing functional groups.
57          After revealing the crucial role of hyperconjugation in the absence of hole upconversion in
58  These results reveal the periodic trend for hyperconjugation in the chalcogens, which reflect a decr
59 onstrated strong stabilization and extensive hyperconjugation in the chromophores that contribute to
60 ers the 2-substituent itself is oriented for hyperconjugation in the initially formed conformation of
61 rism and on the ability to induce a stronger hyperconjugation in the resulting compounds.
62 bond theory, we have evaluated the degree of hyperconjugation in various compounds that display the a
63 hrough N(lone-pair) -> sigma*(C-C) "negative hyperconjugation" in diamino-o-carborane (1) causes rapi
64 onalizes all of these results by considering hyperconjugation interactions between groups at C(2) and
65                                   Removal of hyperconjugation interactions yields the eclipsed struct
66                                              Hyperconjugation is a controlling factor which determine
67                    Stabilization by negative hyperconjugation is proposed for 1,2-dihydroxycyclohexad
68 de anion is stabilized by aromatic "negative hyperconjugation" is described.
69 itude of the beta-silyl effect (the Si-C-Si+ hyperconjugation) is gauged as a function of structure.
70 he activation of the anti proton by negative hyperconjugation may also play a role in the concerted p
71  eukaryotic cells infected with M. smegmatis hyperconjugation mutants.
72 methyl)trimethylsilane (TFMTMS) shows unique hyperconjugation nature to stabilize both Li anode and h
73 acter into vacant boron p-orbitals, but that hyperconjugation of tetrahedral boron-containing functio
74 ond in fluoroalkene 1b is found to be due to hyperconjugation of the eight C-F bonds in 1b with the f
75 ] KIEs arise predominantly from the negative hyperconjugation of the lone pairs of sulfur with the si
76 thermodynamic stabilization through negative hyperconjugation of the nitrogen atom lone pair into ant
77                       The effect of negative hyperconjugation on the solvolytic behavior of carbonate
78           An earlier study demonstrated that hyperconjugation operates in hydrazides by analyzing the
79 participation of remote substituents (double hyperconjugation or through-bond interaction).
80                                 The extended hyperconjugation (or double hyperconjugation) toward the
81 ertions or deletions that cause early lysis, hyperconjugation, or an increased plasmid copy number.
82                                     Negative hyperconjugation provides a satisfactory explanation for
83 ceptors with a lone pair at oxygen (negative hyperconjugation), recent literature reports suggested a
84 ectronic structure calculations suggest that hyperconjugation reduces the stability of the ethylperox
85                                  As negative hyperconjugation releases the "underutilized" stereoelec
86  mechanism involving P-C cleavage to yield a hyperconjugation-stabilized carbocation, pyramidal inver
87  mechanism involving P-C cleavage to yield a hyperconjugation-stabilized carbocation, pyramidal inver
88 g group facilitates the addition by negative hyperconjugation; the twist-boat conformation of the add
89  which occurs through an extended vinylogous hyperconjugation toward the pai*((O=N(+))()) orbital [LP
90     The extended hyperconjugation (or double hyperconjugation) toward the pai*((O=N(+))()) orbital, w
91      Several modes of internal stabilization-hyperconjugation, transannular pi(alkene)...C(+) and tra
92                                              Hyperconjugation underlies many chemical phenomena of fu
93  conjugation (geminal interactions) or sigma hyperconjugation (vicinal interactions, through-bond cou
94                     The importance of double hyperconjugation was investigated computationally using
95  Increasing the degree of pi-conjugation and hyperconjugation was shown to benefit allyl radicals to
96 te conformations where the extent of beta-CH hyperconjugation was similar to that in the free substra
97 try, for example in aromatic pai-systems and hyperconjugation, we anticipate that this concept will s
98 f the cyclopropane ring bond through orbital hyperconjugation, which facilitates the hydrogen transfe
99 uencies are shifted to lower energies due to hyperconjugation with Ni electron density, and engaging
100 h connections illustrate the general role of hyperconjugation with oxygen lone pairs in reactivity.
101 possesses a 2-C-H bond suitably oriented for hyperconjugation with the charge center.
102 nd-state destabilization of the C-H bond via hyperconjugation with the conjugated Schiff base/pyridin
103 istal beta-CH(3) protons with iron indicates hyperconjugation with the spin/hole character on the Fe=

 
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