合成高硫胺糖醇缩醛(II),[3-(4'-氨基-2'-甲基-嘧啶基-(5')-甲基)-4-甲基-5-(β,γ-二氧丙基)-噻唑氯-盐酸盐],二(3-)(4'-氨基-2'-甲基-嘧啶基-(5')-甲基)-4-甲基-5-烯丙基-噻唑氯盐酸盐(VIII)。Erthate Verbindung ist(nach WH Schopfer)与抗微生物剂Thiamins的组合。
合成高硫胺糖醇缩醛(II),[3-(4'-氨基-2'-甲基-嘧啶基-(5')-甲基)-4-甲基-5-(β,γ-二氧丙基)-噻唑氯-盐酸盐],二(3-)(4'-氨基-2'-甲基-嘧啶基-(5')-甲基)-4-甲基-5-烯丙基-噻唑氯盐酸盐(VIII)。Erthate Verbindung ist(nach WH Schopfer)与抗微生物剂Thiamins的组合。
Reactivite des organostanniques allyliques vis-a-vis des derives halogenes: aspects synthetiques et mecanisme
作者:Jean Grignon、Christian Servens、Michel Pereyre
DOI:10.1016/s0022-328x(00)83550-0
日期:1975.8
Allylic organotin compounds react with numerous organichalides by a substitution pathway with complete allylic shift. The radical chain mechanism proposed is supported by the reactivity sequences of halides, the stereochemistry, the influence of radical initiators or inhibitors, rearrangement, polar effects and the side products.
The catalytic effectiveness of ruthenium porphyrins for ylide generation in reactions of ethyl diazoacetate and diisopropyl diazomethylphosphonate with allylic amines, sulfides and iodides is described for the first time. These reactions result mainly in products of the [2,3]-sigmatropicrearrangement of intermediate allylic ylides.
Highly effective catalytic methods for ylide generation from diazo compounds. Mechanism of the rhodium- and copper-catalyzed reactions with allylic compounds
作者:Michael P. Doyle、William H. Tamblyn、Vahid Bagheri