Platinum complex-catalysed carbonylations of organic lodides having β-hydrogens attached to sp<sup>3</sup>-carbons
作者:Ryo Takeuchi、Yasushi Tsuji、Yoshihisa Watanabe
DOI:10.1039/c39860000351
日期:——
Dichlorobis(triphenylphosphine)platinum(II) is an effective catalyst for the carbonylations of organic iodides having β-hydrogens attached to sp3-carbons to give the corresponding aldehydes and esters in the presence of molecular hydrogen and alcohol, respectively.
The unusual geminal hydrogenation of a propargyl alcohol derivative with [CpXRuCl] as the catalyst entails formation of pianostool ruthenium carbenes in the first place; these reactive intermediates can be intercepted with tethered alkenes to give either cyclopropanes or cyclic olefins as the result of a formal metathesis event. The course of the reaction is critically dependent on the substitution
以[Cp X RuCl]为催化剂的炔丙醇衍生物的非常规双氢加氢,首先需要形成钢琴凳形碳烯钌。这些反应性中间体可以通过形式化的复分解事件与链状烯烃截获,生成环丙烷或环状烯烃。反应过程主要取决于烯烃捕集器的取代方式。
Processes and intermediates for N-(S-3-alkylheptanoyl)-D-gamma-glutamyl-glycyl-D-alanine
申请人:PFIZER INC.
公开号:EP0258032A2
公开(公告)日:1988-03-02
Immunoregulatory N-(S-3-alkyl-4-heptenoyl)- and N-(S-3-alkylheptanoyl)-D-gamma-glutamyl-glycyl-D-alanine and esters thereof are synthesized via R-trans-2-hexen-4-ols, R-3-alkyl-4-heptenoic acid and S-3-alkylheptanoic acid.
Vasil'ev, A. A.; Cherkaev, G. V.; Nikitina, M. A., Russian Journal of Organic Chemistry, 1994, vol. 30, # 6.1, p. 870 - 875
作者:Vasil'ev, A. A.、Cherkaev, G. V.、Nikitina, M. A.
DOI:——
日期:——
Platinum complex catalyzed carbonylation of organic iodides. Effective carbonylation of organic iodides having .beta.-hydrogens on saturated sp3 carbons