Diastereoselective conversion of sulfides into sulfoxides. 1,5- and 1,6-asymmetric induction
作者:Justin F. Bower、Christopher J. Martin、David J. Rawson、Alexandra M. Z. Slawin、Jonathan M. J. Williams
DOI:10.1039/p19960000333
日期:——
The diastereoselective oxidation of sulfides into sulfoxides has been achieved with enantiomerically pure dihydrooxazole auxiliaries. When an additional hydroxymethyl substituent is present, diastereocontrol is very high and 1,5-asymmetric induction has been achieved with up to 96 : 4 selectivity, and 1,6-asymmetric induction has been achieved with up to 97 : 3 selectivity in the absence of any additional chiral agents.
用对映纯的二氢噁唑辅基实现了硫化物向亚磺酰胺的非对映选择性氧化。当存在额外的羟甲基取代基时,非对映选择性非常高,1,5-不对称诱导可达到96:4的选择性,而在没有额外的手性试剂的情况下,1,6-不对称诱导可达到97:3的选择性。