79239-13-7Relevant articles and documents
Organylthio(silyl)carbenes
Wagner, Tobias,Lange, Jens,Grote, Dirk,Sander, Wolfram,Schaumann, Ernst,Adiwidjaja, Gunadi,Adam, Arnold,Kopf, Juergen
experimental part, p. 5198 - 5207 (2010/01/11)
The title carbenes 5 can be generated either from diazo compounds 9 by copper-catalyze d catalysis or from chloro(organylthio)methylsilanes 12 by base-induced α-elimination, This is confirmed, by [2+1] cycloadditions with alkenes to give the cyclopropanes
α-ALKYLATION AND α-ALKYLIDENATION OF CARBONYL COMPOUNDS BY O-SILYLATED ENOLATE PHENYLTHIOALKYLATION
Paterson, Ian
, p. 4207 - 4220 (2007/10/02)
For many reactions next to a carbonyl group, the use of O-silylated enolate chemistry offers improvements in yield and selectivity over the corresponding reactions of Group I metal enolates.In the case of α-alkylation of carbonyl compounds, Lewis acid (TiCl4 or ZnBr2) promoted phenylthioalkylation of O-silylated enolates 3 by α-chlorosulphides 4 (R3=H, Me, Prn, Pri, Bui, and Me3Si), followed by reductive sulphur removal by Raney nickel, 5->6, is found to be a reliable method for this synthetically important C-C bond forming step.An alternative sulphur elimination pathway via the sulphoxide, 5->7, allows the regio- and stereocontrolled α-alkylidenation of carbonyl compounds.The phenylthioalkylation reaction is applicable to ketones, aldehydes, esters, and lactones.
INTRODUCTION OF AN ARYLTHIO(TRIMETHYLSILYL)METHYL GROUP INTO ARENES BY FRIEDEL-CRAFTS REACTION: SYNTHESIS OF ARYLMETHYLTRIMETHYLSILANES
Ishibashi, Hiroyuki,Nakatani, Hiroshi,Umei, Yoshizumi,Ikeda, Masazumi
, p. 4373 - 4374 (2007/10/02)
Friedel-Crafts reactions of trimethylsilanes (1a, b) with arenes gave trimethylsilanes (2a,b), which were converted into arylmethyltrimethylsilanes (3) by reduction with Raney nickel.