Nucleophilic addition of triethyl phosphite to acetates of the baylis-hillman adducts: Stereoselective synthesis of (E)- and (Z)-allylphosphonates
作者:Deevi Basavaiah、Subramanian Pandiaraju
DOI:10.1016/0040-4020(95)01055-6
日期:1996.2
Nucleophilic addition of triethylphosphite to 3-acetoxy-2-methylenealkanenitriles and methyl 3-acetoxy-2-methylenealkanoates provides (2E)-2-(diethoxyphosphorylmethyl)alk-2- enenitriles and methyl (2Z)-2-(diethoxy-phosphorylmethyl)alk-2-enoates respectively with good stereoselectivity.
A series of novel functionalized achiral and chiral allylboronates have been synthesized via the nucleophilic addition of boronates on allyl acetates derived via vinylalumination or Baylis-Hillman reaction of aldehydes. These reagents, upon allylboration with aldehydes, furnish,beta-substituted-alpha-methylene-gamma-butyrolactones stereoselectively.
A new carbon–carbon bond forming reaction using O-methyl (S)-prop-2-ynyl dithiocarbonate
作者:Martin Poelert、Walter Roger、Samir Z. Zard
DOI:10.1039/cc9960000743
日期:——
Heating O-methyl (S)-prop-2-ynyl dithiocarbonates 1a-c with electrophilic alkenes 7a-d containing nucleophilic acetoxy group gives 1,3-dithiol-2-ones 9 by a new carbon-carbon bond forming process.
Stereoselective Synthesis of 2-Ethylidene-3-aminonitriles
作者:S. Hbaïeb、Z. Latin、H. Amri
DOI:10.1080/00397919908086061
日期:1999.3
2-(1-acetoxyethyl) acrylonitrile 1 can be stereoselectively converted into 2-ethylidene 3-aminonitriles 4 in good yields in the presence of primary or secondary amines in THF at room temperature.