在咪唑作为催化剂的存在下,硅烷硫醇R 3 SiSH通过与醛和带有携带吸电子取代基的酮加成反应而得到α-甲硅烷氧基链烷硫醇R 1 R 2 C(SH)OSiR 3。将硅烷硫醇非对映选择性地添加到对映纯的醛或酮中提供了一条方便的途径来制备纯手性的α-甲硅烷氧基烷硫醇R 1 R 2 C *(SH)OSiR 3。
Preparation of silanethiols by reaction of silanes with triphenylphosphine sulfide and with alkanethiols
作者:Yudong Cai、Brian P Roberts
DOI:10.1016/s0040-4039(01)00801-2
日期:2001.7
Silanes react with triphenylphosphine sulfide by a radical-chain mechanism to give the corresponding silanethiols in good yield. Silanethiols are similarly formed when silanes react with tert-dodecanethiol. Enantiomerically pure (S)-ButMePhSiH gave racemic silanethiol with Ph3PS, but with tert-dodecanethiol silanethiol with an ee up to 60% has been obtained, although in low chemical yield.
BECKER, B.;WOJNOWSKI, W., SYNTH. AND REACTIV. INORG. AND METAL-ORG. CHEM., 1982, 12, N 5, 565-582
作者:BECKER, B.、WOJNOWSKI, W.
DOI:——
日期:——
Formation of silanethiols by reaction of silanes with carbonyl sulfide: implications for radical-chain reduction of thiocarbonyl compounds by silanes
作者:Yudong Cai、Brian P. Roberts
DOI:10.1016/s0040-4039(00)02109-2
日期:2001.1
tributyltin hydride in the Barton–McCombie deoxygenation of alcohols via their xanthates under mild conditions. Reduction of xanthates by silanes can produce COS as a by-product, leading to the in situ formation of silanethiol that will then act as a protic polarity-reversal catalyst for the reduction.
Addition of silanethiols to aldehydes and ketones: a simple route to homochiral α-siloxyalkanethiols
作者:Yudong Cai、Brian P Roberts
DOI:10.1016/s0040-4039(01)01741-5
日期:2001.11
In the presence of imidazole as a catalyst, silanethiols R3SiSH react by addition with aldehydes and with ketones that carry electron-withdrawing substituents to give α-siloxyalkanethiols R1R2C(SH)OSiR3. Diastereoselective addition of a silanethiol to an enantiopure aldehyde or ketone provides a convenient route to a homochiral α-siloxyalkanethiol R1R2C*(SH)OSiR3.
在咪唑作为催化剂的存在下,硅烷硫醇R 3 SiSH通过与醛和带有携带吸电子取代基的酮加成反应而得到α-甲硅烷氧基链烷硫醇R 1 R 2 C(SH)OSiR 3。将硅烷硫醇非对映选择性地添加到对映纯的醛或酮中提供了一条方便的途径来制备纯手性的α-甲硅烷氧基烷硫醇R 1 R 2 C *(SH)OSiR 3。