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。
Mild halogenation of stabilized ester enolates by cupric halides
摘要:
The reactions of various stabilized ester enolates of 2-keto, 2-(alkoxycarbonyl), 2-phosphoryl, and 2-(benzenesulfonyl) esters with cupric chloride or cupric bromide have been examined. The reactions lead to 2-halo esters in good to excellent yields under mild condition. Enolates which contain an unsaturated functionality such as a double bond, a triple bond, or an allylic or a benzylic moiety react with high chemoselectivity.
Shi Xiao-Xin, Dai Li-Xin, J. Org. Chem., 58 (1993) N 17, S 4596-4598
作者:Shi Xiao-Xin, Dai Li-Xin
DOI:——
日期:——
Mild halogenation of stabilized ester enolates by cupric halides
作者:Xiaoxin Shi、Lixin Dai
DOI:10.1021/jo00069a020
日期:1993.8
The reactions of various stabilized ester enolates of 2-keto, 2-(alkoxycarbonyl), 2-phosphoryl, and 2-(benzenesulfonyl) esters with cupric chloride or cupric bromide have been examined. The reactions lead to 2-halo esters in good to excellent yields under mild condition. Enolates which contain an unsaturated functionality such as a double bond, a triple bond, or an allylic or a benzylic moiety react with high chemoselectivity.
Synthesen Thiamin-�hnlicher Verbindungen: Homothiamin-glykol und 3-[4?-Amino-2?-methyl-pyrimidyl-(5?)-methyl]-4-methyl-5-allyl-thiazoliumchlorid-hydrochlorid
作者:P. Karrer、M. Schoeller
DOI:10.1002/hlca.19510340309
日期:——
Die Synthesen des Homothiamin-glykols (II), [3-(4′-Amino-2′-methyl-pyrimidyl-(5′)-methyl)-4-methyl-5-(β,γ-dioxypropyl)-thiazoliumchlorid-hydrochlorid], sowie diejenige des 3-(4′-Amino-2′-methyl-pyrimidyl-(5′)-methyl)-4-methyl-5-allyl-thiazoliumchlorid-hydrochlorids (VIII) werden beschrieben. Erstere Verbindung ist (nach W. H. Schopfer) für gewisse Mikroorganismen ein Antagonist des Thiamins.
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。