Sequential electron-transfer-desilylation pathways for C-vinylazomethine ylide formation in the photochemistry of [1-(triethylsilyl)allyl]iminium salts
作者:Shyh Fong Chen、John W. Ullrich、Patrick S. Mariano
DOI:10.1021/ja00357a037
日期:1983.9
Mecanisme de formation d'ylure par transfert electron et desilylation du (methyl methylene triethylsilyl-1 allyl) ammonium
Mecanisme de Formation d'ylure part transfert electron et deseryllation du (methyl methylene triethylsilyl-1 allyl) 铵
A protodesilylation route for 2-Aza-1,3-diene synthesis
作者:Shyh-Fong Chen、Eugene Ho、Patrick S. Mariano
DOI:10.1016/s0040-4020(01)86070-1
日期:1988.1
and their propargyl analogs is described. Synthetic sequences for the preparation of these allyl and propargyl imines starting with propargylamine are presented. The silylallyl and silylpropargyl imines are transformed to 2-azadiene products by use of CsF induced desilylation via a pathway involving generation and regioselective γ-protonation of intermediate 1-imino-allyl and propargyl anions. Al
Acid-Mediated Amine Exchange of<i>N</i>,<i>N</i>-Dimethylformamidines: Preparation of Electron-Rich Formamidines
作者:M. G. Finn、David D. Díaz、Warren G. Lewis
DOI:10.1055/s-2005-872249
日期:——
The effect of acid in the amine exchange of N,N-dimethylformamidines has been revisited, allowing the preparation of highly electron-rich compounds that are difficult to obtain under standard conditions. The use of propargylamine as nucleophile led to the formation of substituted imidazoles.