CAS: 19398-53-9; 2,4-Dibromopentane

上下游产品

2-bromopent-3-ene pentane-1,3-diol meso/rac-2,4-pentanediol dimesylate hydrogen bromide 2,4-diphenyl-pentane 2,4-dimethylcyclobutanone penta-1,3-diene hydrogen bromide

📜3-戊烯-2-醇置于氢溴酸,三溴化磷体系中,化学反应生成二溴戊烷
参考文献:Lespieau,Bulletin De La Societe Chimique De France,1930,Vol. <4>47,P. 852
标题:Lespieau,Bulletin De La Societe Chimique De France,1930,Vol. <4>47,P. 852

专利信息

专利号:US-6469133-B2
优先权日:1999-12-13
标题 :Process for the preparation of polymers of dimeric cyclic esters
发明人：BAKER GREGORY L; SMITH III MILTON R
权利人:UNIV MICHIGAN STATE
摘要:The present invention provides a process for the direct synthesis of high melting polymers made from dimeric cyclic esters. In particular, the present invention provides a process for synthesis of polylactic acid (PLA) from racemic materials such as racemic lactide and polymandelide from mandelide. The process further provides racemic metal organic ligand catalysts such as racemic salbinap that catalyzes the polymerization of racemic dimeric cyclic ester monomers to a polylactide stereocomplex. Polymandelide and mixed dimeric cyclic esters are also prepared in the presence of low amounts of water.

专利号:US-3829522-A
优先权日:1971-10-21
标题:Synthesis of alkynes by dehydrohalogenation
发明人：SCHNEIDER C
权利人:SHERWIN WILLIAMS CO
摘要:MIXTURE AS A CONDENSED LIQUID. THE ALKYNE PRODUCTS ARE OBTAINED IN HIGH YEILD. A PROCESS FOR PREPARING ALKYNES OF HIGH PURITY BY DEHYDROGENATION. HALOGENATED PRECURSORS CONSISTING OF DIHALOALKANES AND MONOHALOALKENES ARE REACTED WITH PARTIAL ALCOHOLATE OF AN ALKALI METAL AND AN ALIPHATIC POLYOL. THE REACTION MIXTURE REMAINS FLUID DURING THE PROCESS. ALKYNES AND VOLATILE BY-PRODUCTS ARE EVAPORATED FROM THE REACTION MIXTURE AND PARTIALLY CONDENSED IN A SEPARATION TO RECOVER THE HIGH-PURITY ALKYNE PRODUCT. THE VOLATILE BY-PRODUCTS ARE RETURNED TO THE REACTION