Asymmetric cyclization of 2-butenylene dicarbamates catalyzed by chiral ferrocenylphosphine-palladium complexes: Catalytic asymmetric synthesis of optically active 2-amino-3-butenols
作者:Tamio Hayashi、Akihiro Yamamoto、Yoshihiko Ito
DOI:10.1016/0040-4039(88)80027-3
日期:1988.1
Cyclization of 2-butenylene dicarbamates (RNHCOOCH2CH=CHCH2OCONHR: R = Ph, MeOC6H4, PhCHCH, etc.) in the presence of a palladium catalyst coordinated with chiral (hydroxyalkyl)-ferrocenylphosphine ligand gave optically active 4-vinyl-2-oxazolidones (up to 77% ee) in high yields, which were hydrolyzed to optically active 2-amino-3-butenols.
在手性(羟烷基)-二茂铁基膦配体配位的钯催化剂存在下,将2-丁烯二氨基甲酸酯(RNHCOOCH 2 CH = CHCH 2 OCONHR:R = Ph,MeOC 6 H 4,PhCHCH等)环化,得到旋光的4-高产率的乙烯基-2-恶唑烷酮(ee高达77%),将其水解为光学活性的2-氨基-3-丁烯醇。