CAS: 34671-83-5; 2,2'-Bipyrimidine

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CAS号1722-12-9 2-氯嘧啶 | CAS号31462-54-1 2-碘嘧啶 | CAS号4595-60-2 2-溴嘧啶 | CAS号45695-56-5 2-嘧啶甲脒 | CAS号289-96-3 1,2,3-三嗪 | CAS号679844-18-9 5,5'-二炔基-2,2'-联嘧啶 | CAS号400859-09-8 5-bromo-2-(5-br...

2-氯嘧啶置于三苯基膦,Nickel Dichloride,锌体系中,用 N,N-二甲基甲酰胺 用作溶剂,化学反应 50.0H,以82%的收率获得2 2'-联嘧啶
参考文献:制备5-溴和5,5'-二溴的2,2'-联吡啶和2,2'-联嘧啶.
标题:制备5-溴和5,5'-二溴的2,2'-联吡啶和2,2'-联嘧啶.
摘要:已经开发了可用于制备金属络合物分子棒的5-溴和5,5'-二溴的2,2'-联吡啶和2,2'-联嘧啶的有效合成方法.通过以下方法获得了5-溴-2,2'-联吡啶,5-溴-5'-正丁基-2,2'-联吡啶和5-溴-5'-正己基-2,2'-联吡啶2,5-二溴吡啶与2-三甲基苯乙烯基吡啶或必要的5-烷基-2-三甲基苯乙烯基吡啶的斯蒂勒偶联,是通过3-烷基吡啶.Bf(3)络合物的区域选择性锌化而获得的,该络合物在较少受两个反应位置影响的情况下与二锂-叔丁基-(2,2,6,6-四甲基哌啶子基)锌酸酯.通过5,5'-二溴-2,2'-联吡啶通过2,5-二溴吡啶与六正丁基二锡烷的还原对称偶联而获得.这些偶联反应的收率为70-90%.
Doi:10.1021/jo010707J

专利信息

专利号:US-2021107859-A1
优先权日:2018-04-06
标题 :A process for the synthesis of carbon labeled organic compounds
发明人：AUDISIO DAVIDE; CANTAT THIBAULT; DESTRO GIANLUCA
权利人:COMMISSARIAT ENERGIE ATOMIQUE
摘要:A process for the synthesis of a carbon labeled organic compound containing a carbon labeled carboxyl group is described. A method of using carbon labeled organic compounds containing a carbon labeled carboxyl group according to the present disclosure; a process for manufacturing labeled pharmaceuticals and agrochemicals comprising synthesis of carbon labeled organic compounds containing a carbon labeled carboxyl group according to the present disclosure; and a process for producing tracers comprising synthesis of carbon labeled organic compounds containing a carbon labeled carboxyl group according to the present disclosure are also described.

专利号:US-7538061-B2
优先权日:2001-05-18
标题 :One-step production of 1,3-propanediol from ethylene oxide and syngas with a cobalt-iron catalyst
发明人：KNIFTON JOHN FREDERICK; JAMES TALMADGE GAIL; SLAUGH LYNN HENRY; WEIDER PAUL RICHARD; ALLEN KEVIN DALE; POWELL JOSEPH BROUN
权利人:SHELL OIL CO
摘要:Disclosed is a new catalyst composition comprising a bimetallic Co—Fe catalyst, optionally complexed with a ligand selected from a N-heterocycle, phosphine, or porphorine ligand, that provides a lower cost alternative for the one step synthesis of 1,3-propanediol (1,3-PDO) from ethylene oxide and synthesis gas. For example, a catalyst containing cobalt carbonyl: iron carbonyl with no ligand, or a catalyst containing a cobalt carbonyl: octaethylporphine iron acetate provide moderate yields of 1,3-PDO in a one step synthesis under mild conditions.

专利号:US-6903044-B2
优先权日:2001-05-18
标题:One-step production of 1,3-propanediol from ethylene oxide and syngas with a catalyst with a N-heterocyclic ligand
发明人：KNIFTON JOHN FREDERICK; JAMES TALMADGE GAIL; ALLEN KEVIN DALE; WEIDER PAUL RICHARD; POWELL JOSEPH BROUN; SLAUGH LYNN HENRY; WILLIAMS TIMOTHY
权利人:SHELL OIL CO
摘要:Disclosed is a new catalyst composition comprising a bimetallic Co—Ru catalyst complexed with a N-heterocylcic ligand that is effective, economical, and provides improvements in oxidative stability in the one step synthesis of 1,3-propanediol (1,3-PDO) from ethylene oxide and synthesis gas. For example, cobalt-ruthenium-2,2′-bipyrimidine, 2,2′-dipyridyl, or 2,4,6-tripridyl-s-triazine catalyst precursors in cyclic ether solvents, such as 1,3-dioxolane, 1,4-dioxolane, 1,4-dioxane, and 2-ethyl-2-methyl-1,3-dioxolane, provide good yields of 1,3-PDO in a one step synthesis.

专利号:US-2009234121-A1
优先权日:2008-01-16
标 题 :Tridentate (nnc) catalysts for the selective oxidation of hydrocarbons
发明人：PERIANA ROY A; GODDARD III WILLIAM A; OXGAARD JONAS; YOUNG KENNETH
权利人:PERIANA ROY A; GODDARD III WILLIAM A; OXGAARD JONAS; YOUNG KENNETH
摘要:The synthesis of discrete, air, protic, and thermally stable transition metal NNC complexes that catalyze the CH activation and functionalization of alkanes and arenes is disclosed. Methods for the selective conversion of methane to methanol or methyl esters in acidic and neutral media are disclosed.

专利号:US-6774229-B2
优先权日:1999-11-21
标 题 :Coupling condensation synthesis of heterocycles
发明人：MUELLER THOMAS; ANSORGE MARKUS
权利人:MORPHOCHEM AG
摘要:The invention relates to a process for the preparation of heterocycles, characterised in that the following components: n i) a propargyl derivative of the general structural formula I n  a wherein Het is an optionally substituted hetero atom and A is a substituted or unsubstituted aromatic entity, a substituted or unsubstituted aromatic heterocycle, a substituted or unsubstituted vinyl arene and/or a derivative thereof, an olefin, an alkyne, an acceptor group or a nitrile; n (ii) a compound of the general structural formula II, n n n B—X  II, n n n  wherein B is an electron-deficient substituted or unsubstituted aromatic entity with or without an acceptor group, an electron-deficient substituted or unsubstituted heteroaromatic entity with or without an acceptor group, an electron-deficient olefin and/or alkyne, a metal complex, and X is a leaving group; n (iii) a nucleophile of the general structural formula III, n n n Y—C n —Z  III, n n n  wherein Y and/or Z, each independently of the other, is an amino group, thio group (mercapto group), seleno group, telluro group, hydroxy group (alcohol group), imido group, carbonyl group, thiocarbonyl group, selenocarbonyl group, tellurocarbonyl group; C is a substituted or unsubstituted C atom, a substituted or unsubstituted or annelated CC double bond or single bond and n=0-10, preferably 1-5, preferably are reacted in a one-pot reaction by cyclocondensation to form 4- to 10-membered, preferably 5- to 7-membered, heterocyclic, aromatic or non-aromatic ring systems.

专利号:US-7115540-B2
优先权日:2002-02-13
标题 :Synthesis of aliphatic 1,3-diols utilizing reduced ligand concentration and water extraction
发明人：POWELL JOSEPH BROUN; WEIDER PAUL RICHARD; KNIFTON JOHN FREDERICK; ALLEN KEVIN DALE; SLAUGH LYNN HENRY; ARHANCET JUAN PEDRO
权利人:SHELL OIL CO
摘要:This invention is a process for synthesizing aliphatic 1,3-diols in one step by hydroformylation and hydrogenation of oxirane, carbon monoxide, and hydrogen employing a catalyst comprising a cobalt carbonyl compound and a cocatalyst metal compound ligated with a ligand in a ligand to cocatalyst metal atom molar ratio in the range of 0.2:1.0 to 0.6:1.0, optionally in the presence of a promoter, where recovery of product is preferably accomplished via water extraction of a diol rich phase from the bulk reaction mixture. The process modifications can, particularly in combination, be beneficial with respect to product recovery, catalyst recycle, and overall economics of a one-step process for producing aliphatic 1,3-diols.