Production method of optically active trans-vinylsulfide alcohol
申请人:Suntory Limited
公开号:US06049009A1
公开(公告)日:2000-04-11
A method for producing an optically active trans-vinylsulfide alcohol having the formula: ##STR1## wherein R.sup.1 represents an alkyl group or an aryl group, comprising the step of reducing a trans-vinylsulfide ketone with a borane reducing agent in the presence of an optically active oxazaborolidine and an additive.
Treatment of substituted octa-2,6-dien-4-yne-1,8-dial derivatives with CF3COOH gave cyclopentadiene, thiophene, or isobenzothiophene derivatives. Formation of an 18-membered cyclic ether was observed in the case of octa-2,7-dien-4-yne-1,6-diol derivative.
PROCESS FOR PRODUCING OPTICALLY ACTIVE TRANS-VINYL SULFIDE ALCOHOLS
申请人:SUNTORY LIMITED
公开号:EP0801057A1
公开(公告)日:1997-10-15
A method for producing an optically active trans-vinylsulfide alcohol having the formula:
wherein R1 represents an alkyl group or an aryl group, comprising the step of reducing a trans-vinylsulfide ketone with a borane reducing agent in the presence of an optically active oxazaborolidine and an additive.
5,8,16,19-Tetra-tert-butyl-6,17,23-trisdehydro[22]bi[10.10.2]annulene. A condensed nonbenzenoid aromatic system consisting of two 14.pi.-electron systems