摘要:
A process for producing an alcohol or a silyl ether thereof of formula (4): wherein R1 represents a hydrocarbon, a heterocyclic, or an alkoxycarbonyl group; R2 represents hydrogen or CO2R; X represents an aryl or an alkenyl group of formula (3): and R8 represents hydrogen or a silyl residue, by reacting a compound R1(C═O)R2 with a silane (R3)2R4Si—X, wherein R3 and R4 each represents an alkyl, an alkoxy, or an aryl group; in the presence of (i) a catalyst component containing copper fluoride or a catalyst component containing a copper compound and a fluoride and (ii) a bidentate phosphine compound or in the presence of a complex obtained from the foregoing components.
摘要:
A process for producing an alcohol or a silyl ether thereof of formula (4): wherein R1 represents a hydrocarbon, a heterocyclic, or an alkoxycarbonyl group; R2 represents hydrogen or CO2R; X represents an aryl or an alkenyl group of formula (3): and R8 represents hydrogen or a silyl residue, by reacting a compound R1(C═O)R2 with a silane (R3)2R4Si—X, wherein R3 and R4 each represents an alkyl, an alkoxy, or an aryl group; in the presence of (i) a catalyst component containing copper fluoride or a catalyst component containing a copper compound and a fluoride and (ii) a bidentate phosphine compound or in the presence of a complex obtained from the foregoing components.
摘要翻译:一种制备式(4)的醇或甲硅烷基醚的方法:其中R 1表示烃,杂环或烷氧基羰基; R 2表示氢或CO 2 R; X表示式(3)的芳基或烯基:R 8表示氢或甲硅烷基,通过使化合物R 1(CO)R SUP 具有硅烷(R 3 O 3)2 Si 4的Si-X,其中R 3 O / >和R 4各自表示烷基,烷氧基或芳基; 在(i)含有氟化铜或含有铜化合物和氟化物的催化剂组分的催化剂组分的存在下,和(ii)二齿膦化合物或在由上述组分获得的络合物的存在下。
摘要:
A ligand expressed by a general formula (1) in claim 1, wherein R1, R2 and R3 denote substituting groups on aromatic rings, X is P or As, and n is 1 to 3.
摘要:
A method of manufacturing a cyano compound by reacting a carbonyl compound with a nitrile compound having at least one α-hydrogen atom in the presence of a ligand and a metal compound of formula (III), MX (III) wherein M is a copper atom or a silver atom, and X is an alkoxy group, an alkyl group, an aryl group or an anionic residue.
摘要:
Disclosed is a novel asymmetric ligand which can be synthesized by a short process at low cost and is capable of exhibiting higher catalytic activity and enantioselectivity than the conventional ligands derived from sugars. Also disclosed are a method for producing such an asymmetric ligand, and a catalyst using such an asymmetric ligand. Specifically disclosed is a ligand represented by the general formula I below or the like. (In the formula, R1 and R2 independently represent 0-5 substituents; X represents P, As or N; m represents an integer of 0-7; n represents an integer of 0-3; A1-A4 independently represent hydrogen, fluorine, chlorine, bromine, benzoyl or acetyl, or alternatively A2 and A3 combine together to form a ring.)
摘要:
Disclosed is a novel asymmetric ligand which can be synthesized by a short process at low cost and is capable of exhibiting higher catalytic activity and enantioselectivity than the conventional ligands derived from sugars. Also disclosed are a method for producing such an asymmetric ligand, and a catalyst using such an asymmetric ligand. Specifically disclosed is a ligand represented by the general formula I below or the like. (In the formula, R1 and R2 independently represent 0-5 substituents; X represents P, As or N; m represents an integer of 0-7; n represents an integer of 0-3; A1-A4 independently represent hydrogen, fluorine, chlorine, bromine, benzoyl or acetyl, or alternatively A2 and A3 combine together to form a ring.)
摘要:
A method of manufacturing a cyano compound by reacting a carbonyl compound with a nitrile compound having at least one α-hydrogen atom in the presence of a ligand and a metal compound of formula (III), MX (III) wherein M is a copper atom or a silver atom, and X is an alkoxy group, an alkyl group, an aryl group or an anionic residue.
摘要:
An optically active binaphthyl compound of the formula (1): wherein R1 is a C1-6 alkyl group, an aryl group or an aryl C1-6 alkyl group, X is an oxygen atom or a sulfur atom, R2 is a hydrogen atom, a C1-6 alkyl group, a C2-6 alkenyl group, a C2-6 alkynyl group or a halogen atom, each of L1 and L2 is a hydrogen atom, or L1 and L2 together form MY wherein M is a rare earth element or a Group 13 element, and Y is a C1-6 alkoxy group, a C1-6 alkylcarbonyloxy group or a halogen atom, and m is an integer of from 1 to 3.
摘要翻译:式(1)的光学活性联萘化合物:其中R1是C1-6烷基,芳基或芳基C1-6烷基,X是氧原子或硫原子,R2是氢原子, C 1-6烷基,C 2-6烯基,C 2-6炔基或卤素原子,L1和L2各自为氢原子,或L1和L2一起形成MY,其中M为稀土元素或 第13族元素,Y为C 1-6烷氧基,C 1-6烷基羰基氧基或卤素原子,m为1〜3的整数。
摘要:
Optically active 1-substituted phenyl-2-nitro alcohol derivatives having the formula (1) and the process for producing thereof, and 1-substituted phenyl-2-amino alcohol derivatives having the formula (2) and the process for producing thereof from the optically active 1-substituted phenyl-2-nitro alcohol derivatives. From these nitro alcohols, pharmaceuticals such as (R)-albutamin and (R)-sarmeterol useful as a bronchodilator is obtained via optically active amino alcohols which are useful pharmaceutical intermediates.
摘要:
There are disclosed a bicyclo[3.3.0]octene derivatives having the following formula: ##STR1## wherein R.sup.1 : a straight, branched or cyclic alkyl group or alkenyl group each having 5 to 10 carbon atoms;R.sup.2 and R.sup.3 : each represent a hydrogen atom or a protective group of a hydroxy group; andR.sup.4 : --CH.dbd.CH--(CH.sub.2).sub.2 --COOR.sup.5 or --CH.sub.2 R.sup.6 ; whereR.sup.5 : a hydrogen atom or an alkyl group; andR.sup.6 : a hydroxy group, an acetyloxy group or a butenyl group,and process for producing the same. These compounds and the process for producing them are available for producing a 9(0)-methano-.DELTA..sup.6 (9.alpha.)-PGI.sub.1.