Synthesis of 5-Alkylidene-6-(dimethylamino)methyl-1,3-cyclohexadienes from α-Substituted Benzyldimethylammoniomethylides
作者:Yoshio Machida、Naohiro Shirai、Yoshiro Sato
DOI:10.1055/s-1991-26393
日期:——
2-Substituted 5-alkylidene-6-(dimethylamino)methyl-1,3-cyclohexadienes (E)-4 and (Z)-4 were prepared by the reaction of α,4-disubstituted dimethyl[(trimethylsilyl)methyl]benzylammonium iodides 2 with cesium fluoride. Their E-isomers were stable at room temperature and could be used in the Diels-Alder reaction. Some related reactions are also described.
Synthese und reaktionsverhalten von (dialkylaminomethyl)chlorsilanen und -stannanen
作者:A. Tzschach、W. Uhlig、K. Kellner
DOI:10.1016/0022-328x(84)80105-9
日期:1984.4
(Dialkylaminomethyl)chlorosilanes have been obtained by the reaction of trichlorosilane with bis(dimethylamino)methane. The corresponding stannanes have been prepared by the addition of methyleneimmonium halides to SnCl2. In the silicon compounds a covalent SiCH2N bond is observed, while the tin compounds have ionic structures. Reactions of the new compounds are described.
A convenient synthesis of o-methylbenzylamine derivatives from benzyl halides: the improved Sommelet–Hauser rearrangement
作者:Mitsuji Nakano、Yoshiro Sato
DOI:10.1039/c39850001684
日期:——
Desilylation by fluoride anion of benzyldimethyl(trimethylsilylmethyl)ammonium halides having a Cl–, CN–, or AcO– substituent on the benzene ring gave high yields of the Sommelet–Hauserrearrangement products at room temperature.
Anionic rearrangement of the germyl and silyl groups in [2-(trimethylgermyl)-2-(trimethylsilyl)ethyl]dimethylammonium N-methylide and related compounds
作者:Sumie Inoue、Shin'ichi Urayama、Hiroyo Sugiura、Yoshiro Sato
DOI:10.1016/0022-328x(89)88037-4
日期:1989.3
The reaction of [2,2-bis(trimethylsilyl)ethyl]- and [2,2-bis(trimethylgermyl)ethyl]-trimethylammonium iodides (3a and 3c) with n-butyllithium gives N-[(trimethylsilyl)methyl]- and N-[(trimethylgermyl)methyl]dimethylamines (5a and 5b), respectively. A mixture of 5a and 5b is obtained from the reaction of [2-(trimethylgermyl)-2-(trimethylsilyl)ethyl]trimethylammonium iodide (3b). Use of lithium diisopropylamide
Reaction of (dialkylaminomethyl)trimethylsilanes with benzyne
作者:Yoshiro Sato、Toyohiko Aoyama、Hideaki Shirai
DOI:10.1016/s0022-328x(00)80716-0
日期:1974.12
Reactions of (dialkylaminomethyl)trimethylsilanes [dimethylamino-, diethylamino-, pyrrolidino- and morpholino-] with benzyne in THF gave two types of aniline derivatives: N-alkyl-N-(1-trimethylsilylalkyl)anilines and N-alkyl-N-trimethylsilylmethylanilines. From (piperidinomethyl)trimethylsilane, however, unexpected 1-(α-trimethylsilylbenzyl)piperidine was obtained together with N-(4-pentenyl)-N-tr