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CAS号75-22-9 三甲胺-硼烷络合物 | CAS号109-89-7 二乙胺 | CAS号19287-45-7 乙硼烷 | CAS号10544-50-0 1,2,3,4,5,6,7,8... | CAS号16940-66-2 硼氢化钠 | CAS号6274-12-0 二乙胺氢溴酸盐 | CAS号109-99-9 四氢呋喃 | CAS号14044-65-6 四氢呋喃硼烷络合物 | CAS号102233-90-9 | CAS号18494-92-3 diethylaminoboron | CAS号2386-99-4 Bis(dimethylami... | CAS号1333-74-0 氢 | CAS号50831-09-9 二乙胺盐酸盐 在 Sodium Tetrahydroborate体系中,用 四氢呋喃作为反应溶剂,反应 2.75H,以60%的收率获得n,N-Diethylamine-Borane
参考文献:骨架镍催化剂对胺-硼烷加合物的异质脱氢偶联作用
标题:骨架镍催化剂对胺-硼烷加合物的异质脱氢偶联作用
摘要:由ni / Al合金中al的选择性浸出产生的骨架ni已成功用于各种胺-硼烷加合物的催化脱氢.低成本和简便的单步合成相结合,使该系统成为先前描述的贵金属和其他第一行金属催化剂的潜在有吸引力的替代品.催化剂的非均质性质有利于方便的产物纯化,这是第一个基于第一行过渡金属的此类系统.使用5 Mol%的骨架ni催化剂在20°C下证明了me 2 Nh.Bh 3(1)和et 2 Nh.Bh 3(5)的催化脱氢偶联并生成了[Me 2的n-Bh 2 ] 2(2)和[等2的n-Bh 2 ] 2 / Et 2 N═bh 2(6),分别.相关的加合物i Pr 2 Nh.Bh 3(7)也被脱氢得到i Pr 2 N = Bh 2(8),但催化剂明显失活.发现menh 2 .Bh 3(9)催化脱氢反应生成环状三氮杂硼烷[Menh-Bh 2 ] 3(10)为主要产物,而当使用化学计量的ni时,会形成高分子量聚(甲基氨基硼烷)[Menh-Bh
Doi:10.1021/Ic201809G
专利信息
专利号:US-9802934-B2
优先权日:2013-10-17
标 题 :Process for the synthesis of (R)-praziquantel
发明人:QIAN MINGXIN
权利人:TONGLI BIOMEDICAL CO LTD
摘要:The present disclosure relates to a process and new intermediates for the synthesis of (R)-praziquantel, which is obtained through four steps in proper order, that is, condensation reaction, reduction reaction, acylation reaction and ring-closing reaction, using (1R)-2-substituted-1,2,3,4-tetrahydroisoquinoline-1-carboxylic acid as starting material. Overall, the present disclosure provides a (R)-praziquantel product with higher optical purity through a process route that is more cost effective and environmentally friendly.
专利号:US-4444685-A
优先权日:1981-04-27
标 题 :Stereospecific synthesis of thienamycin from penicillin
发明人:AMATO JOSEPH S; KARADY SANDOR; WEINSTOCK LEONARD M
权利人:MERCK & CO INC
摘要:A stereospecific conversion of penicillin to thienamycin, using diisopropylamine borane and magnesium trifluoroacetate to prepare the hydroxyethyl side chain and acetoacetate dianion equivalent disilylethyl to prepare the β-ketoester side chain.
专利号:CN-101128469-B
优先权日:2005-02-25
标 题:Synthesis of protease inhibitor precursors
专利号:US-2017121330-A1
优先权日:2013-10-17
标题 :Process and intermediates for the synthesis of (r)-praziquantel
专利号:CN-1730540-A
优先权日:2005-07-20
标 题 :Synthesis method of metal nanoparticle and polysaccharide polymer composite material
专利号:CN-115636764-B
优先权日:2022-11-08
标题:A kind of synthesis method of benzamide compound