A Quick Procedure for the Preparation of 1-N,N-Dialkylamino-1-Buten-3-Ynes
摘要:
1-N,N-Dialkylamino-1-buten-3-ynes, HC = CCH = CHNR2 (R = CH3 or C2H5, E/Z ratio approximately 97:3) have been prepared in 80 and 84% yields by treating the Mannich-coupling products from HC = CCH2OCH3 and R2NCH2OH, CH3OCH2C = CCH2NR2, with two equivalents of potassium amide in liquid ammonia and subsequently adding methanol or ammonium chloride.
Synthesis and monoamine oxidase inhibitory activities of .alpha.-allenic amines in vivo and in vitro. Different activities of two enantiomeric allenes
作者:Christer Sahlberg、Svante B. Ross、Ingrid Fagervall、Anna Lena Ask、Alf Claesson
DOI:10.1021/jm00361a017
日期:1983.7
alpha-allenic amines, including primary, secondary, and tertiary ones, was synthesized, partly by organocopper chemistry. Their ability to inhibit mouse and rat brain mitochondrial monoamineoxidase (MAO) in vivo and in vitro, respectively, was evaluated. Almost all compounds were quite potent inhibitors of MAO, some as potent as deprenyl. Like deprenyl, most of the compounds were selective inhibitors
Etude du comportement d'organometalliques (M = Zn, Mg, Li) vis a vis d'enynes conjuges
作者:D. Mesnard、L. Miginiac
DOI:10.1016/s0022-328x(00)87262-9
日期:1976.9
organometallic compounds such as allyl-zinc, -magnesium, -lithium and saturated lithium compounds are shown to readily undergo addition reactions with conjugated enynes: HCCC(R)C(R)(R), but the reactivity is reduced when the steric hindrance around the double bond is increased. With each organometallic compound used, this reaction is regioselective: 3,4 addition with organozinc compounds, 1,2 addition