Baylis–Hillman reactions of N-arylidenediphenylphosphinamides with methyl vinyl ketone, methyl acrylate, and acrylonitrile
作者:Min Shi、Gui-Ling Zhao
DOI:10.1016/s0040-4039(02)00813-4
日期:2002.6
Baylis–Hillman reactions of N-arylidenediphenylphosphinamides 1 with methyl vinyl ketone (MVK), methyl acrylate or acrylonitrile, the Lewis base and solvent can significantly affect the reaction rate. Using PPh3 as Lewis base in the reaction of 1 with MVK in DMF, THF or MeCN, the normal Baylis–Hillman adduct 2 was formed in very high yield. In the Baylis–Hillman reaction of 1 with methyl acrylate, the Lewis
One-pot aza-Baylis–Hillman reactions of arylaldehydes and diphenylphosphinamide with methyl vinyl ketone in the presence of TiCl4, PPh3, and Et3N
作者:Min Shi、Gui-Ling Zhao
DOI:10.1016/s0040-4039(02)02263-3
日期:2002.12
We found that one-pot, three-component, aza-Baylis–Hillmanreactions of arylaldehydes, diphenylphosphinamide, and methyl vinyl ketone (MVK) can be realized in the presence of TiCl4 (0.8 equiv.), PPh3 (0.1 equiv.), and Et3N (12 equiv.) in dichloromethane to give the corresponding aza-Baylis–Hillman adducts 2 in good yields.
Aza-Baylis–Hillman Reactions ofN-(Arylmethylene)diphenylphosphinamides with Activated Olefins in the Presence of Various Lewis Bases
作者:Min Shi、Gui-Ling Zhao
DOI:10.1002/adsc.200404081
日期:2004.8
The aza-Baylis–Hillman reactions of N-(arylmethylene)diphenylphosphinamides with methyl vinyl ketone (MVK), methyl acrylate, acrylonitrile, ethyl vinyl ketone (EVK), phenyl vinyl ketone (PVK), phenyl acrylate, 2-cyclopenten-1-one, 2-cyclohexen-1-one have been systemically investigated in the presence of various Lewis bases. The Lewis base and solventeffects in these reactions have been discussed. A