Gold Sulfonium Benzylide Complexes Undergo Efficient Benzylidene Transfer to Alkenes

Autor:	Ross A. Widenhoefer, Robert G. Carden
Rok vydání:	2019
Předmět:	chemistry.chemical_classification Trifluoromethyl Sulfide 010405 organic chemistry Sulfonium Sodium Organic Chemistry Kinetics Cationic polymerization chemistry.chemical_element General Chemistry 010402 general chemistry 01 natural sciences Medicinal chemistry Catalysis 0104 chemical sciences Styrene chemistry.chemical_compound chemistry Boron
Zdroj:	Chemistry – A European Journal. 25:11026-11030
ISSN:	1521-3765 0947-6539
DOI:	10.1002/chem.201902845
Popis:	The gold sulfonium benzylide complexes [(P1)AuCHPh(SR1 R2 )]+ {B[3,5-CF3 C6 H3 ]4 }- [P1=P(tBu)2 o-biphenyl; R1 , R2 =-(CH2 )4 - (1 a); R1 =Et, R2 =Ph (1 b); R1 =R2 =Ph (1 c)] were synthesized by reaction of the gold α-chloro benzyl complex (P1)AuCHClPh with sodium tetrakis[3,5-bis(trifluoromethyl)phenyl]borate and excess sulfide. Complexes 1 undergo efficient benzylidene transfer to alkenes and DMSO under mild conditions without external activation. Kinetic analysis of the reaction of 1 c with styrene was consistent with the intermediacy of the cationic gold benzylidene complex [(P1)AuCHPh]+ (I).
Databáze:	OpenAIRE
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