31459-99-1Relevant articles and documents
α-hypervalent iodine functionalized phosphonium and arsonium ylides and their tandem reaction as umpolung reagents
Huang, Zhizhen,Yu, Xiaochun,Huang, Xian
, p. 8261 - 8264 (2007/10/03)
α-Hypervalent iodine functionalized phosphonium and arsonium ylides 2 can be used as umpolung ylides to react with nucleophiles to give α-heteroatom substituted ylides 4 in good yields. The nucleophilic substitution - Wittig tandem reaction of 2 can occur smoothly to provide an efficient method for the synthesis of (Z)-α-halo-α,β-unsaturated enoates or enones 6, stereoselectively.
A simple method to prepare acceptor substituted α-chloromethylenephosphoranes
Schafer
, p. 1053 - 1056 (2007/10/02)
α-Chlorophosphoranes can be easily prepared by the reaction of the corresponding phosphonium salts with bleaching powder in protic solvents.
Studies of Heterocyclic Enaminonitriles, XII. Reactions of 4,5-Dihydro-2-morpholino- (and -2-pyrrolidino)-3-furancarbonitriles with Dichlorocarbene
Yamagata, Kenji,Takaki, Mikiko,Yamazaki, Motoyoshi
, p. 1109 - 1112 (2007/10/02)
The reaction of 4,5-dihydro-2-morpholino- (and -2-pyrrolidino)-3-furancarbonitriles 1a, c, d and 2a, c, d with dichlorocarbene gave 4-(2,4-pentadienoyl)morpholines 3a, c, d and 1-(2,4-pentadienoyl)pyrrolidines 4a, c, d.Similarly, the reaction of 4,5-dihyd
