摘要:
In one aspect, phosphine compounds comprising three adamantyl moieties (PAd3) and associated synthetic routes are described herein. Each adamantyl moiety may be the same or different. For example, each adamantyl moiety (Ad) attached to the phosphorus atom can be independently selected from the group consisting of adamantane, diamantane, triamantane and derivatives thereof. Transition metal complexes comprising PAd3 ligands are also provided for catalytic synthesis including catalytic cross-coupling reactions.
摘要:
The purpose of the present invention is to provide: a ligand that is useful in a catalytic organic synthetic reaction; a method for producing said ligand; and a metal complex that is useful as a catalyst in an organic synthetic reaction. The present invention provides a compound represented by general formula (1A), a method for producing said compound, and a metal complex including said compound as a ligand. (In the formula, H, N, P, S, L, R1, R2, R3, Q1, and Q2 have the meaning as defined in the Description.)
摘要:
Phosphenium compounds with the general formula I: in which R1, R2, R3 and R4 are identical or different and represent a linear or branched C1-C6-alkyl radical, which can optionally be substituted, or R1 and R2 and/or R3 and R4 are bonded to one another with the formation of a ring, R5 and R6 stand for a saturated or unsaturated and linear or branched alkyl group, alkenyl group or aryl group, which can have suitable substituents, even heteroatoms as substituents, or a heteroatom-comprising hydrocarbon group, which can have suitable substituents, and the R5 and R6 radicals can form a ring which can be 4- to 20-membered, saturated or unsaturated and alicyclic or heteroalicyclic and can exhibit suitable substituents, X− represents an anion, a process for the preparation thereof, and also the use of these compounds in metal complexes which can be used as catalysts in organic synthesis, are claimed.
摘要:
Compounds of the formula I, in the form of mixtures comprising predominantly one enantiomer or in the form of pure enantiomers, secondary phosphine-Q-P*(═O)HR1 (I) in which secondary phosphine is a C-bonded, secondary phosphine group —P(R)2; in which R is in each case independently hydrocarbon radicals or heterohydrocarbon radicals; Q is a bivalent, achiral, aromatic base skeleton, a bivalent, achiral ferrocene base skeleton, an optionally substituted bivalent cycloalkane or heterocycloalkane skeleton, or a C1-C4-alkylene skeleton, and in which base skeletons a secondary phosphine group is bonded directly to a carbon atom, or, in the case of cyclic base skeletons, directly to a carbon atom or via a C1-C4-alkylene group, and in which base skeletons a P-chiral group —P*(O)HR1 is bonded to a carbon atom such that the phosphorus atoms are linked via 1 to 7 atoms of a carbon chain optionally interrupted by heteroatoms from the group of O, S, N, Fe or Si; P* is a chiral phosphorus atom; and R1 is a hydrocarbon radical, a C-bonded heterohydrocarbon radical or a ferrocenyl radical, with the proviso that R1 is an achiral ferrocenyl radical when Q is an achiral ferrocenyl base skeleton. Metal complexes of these ligands in a molar ratio of ligand to metal of about 1.3:1 to 0.9:1 are homogeneous catalysts for asymmetric addition reactions, particularly hydrogenations.
摘要:
This invention provides a method for generating secondary phosphines from secondary phosphine oxides in the presence of a reducing agent, such as diisobutylaluminum hydride (DIBAL-H), triisobutyldialuminoxane, triisobutylaluminum, tetraisobutyldialuminoxane, or another reducing agent comprising: (i) an R1R2AlH moiety, wherein R1 and R2 are each an alkyl species or oxygen, and wherein at least one of R1 or R2 comprises at least 2 carbon atoms, or (ii) an R1R2R3Al moiety, wherein R1, R2, and R3 are not hydrogen, and wherein at least one of R1, R2, and R3 is an alkyl species comprising a β-hydrogen, not including triethylaluminum. Preferred reducing agents for the present invention include: diisobutylaluminum hydride, triisobutyldialiuminoxane, triisobutylaluminum, tetraisobutyldialuminoxane, and combinations thereof.
摘要翻译:本发明提供了一种在还原剂如二异丁基氢化铝(DIBAL-H),三异丁基二铝氧烷,三异丁基铝,四异丁基二铝氧烷或其它还原剂存在下从次膦氧化物产生仲膦的方法,其包括:(i)R 其中R 1和R 2各自为烷基或氧,并且其中至少 R 1或R 2中的一个包含至少2个碳原子,或(ii)R 1 R 2 R 2 其中R 1,R 2和R 3不是氢,并且其中R 1,R 2,R 3和R 3不是氢,并且其中R 1, R 1,R 2和R 3 3中的至少一个是包含不包括三乙基铝的β-氢的烷基物质。 用于本发明的优选的还原剂包括:二异丁基氢化铝,三异丁基二肟氧烷,三异丁基铝,四异丁基二铝氧烷及其组合。
摘要:
The present invention relates to chiral diphosphinoterpenes and transition metal complexes thereof, to a process for preparing chiral diphosphinoterpenes and oxides thereof, and to transition metal complexes comprising the chiral diphosphinoterpenes. In a further aspect, the invention relates to the use of the chiral diphosphinoterpenes or transition metal complexes thereof in asymmetric syntheses.
摘要:
Palladum-phosphine complexes obtained by reacting a 5 compound of formula (1) below with a palladium compound: F(I) (wherein R1 is a hydrogen atom, an alkyl group, a cycloalkyl group or a phenyl group which may be substituted; R2 and R3 are each, the same or different, an alkyl group, a cycloalkyl group or a phenyl group which may be substituted; R4 and R5 are each, the same or different, a hydrogen atom, an alkyl group, a cycloalkyl group or a phenyl group which may be substituted; R6, R7, R8 and R9 are each, the same or different, an alkyl group, a cycloalkyl group, a phenyl group which may be substituted, an alkoxyl group, a dialkylamino group, a halogen atom, a phenyl group, a benzyl group, a naphthyl group or a halogenated alkyl group; R6 and R7, R8 and R9 may be combined to form, each, a fused ring, a trimethylene group, a tetramethylene group or a 20 methylenedioxy group; p, q, r and s are each an integer of 0 to 5; and p+q, and r+s are each in the range of 0 to 5.), which is a novel and efficient catalyst for manufacturing various useful compounds
摘要翻译:通过使下述式(1)的化合物与钯化合物F(I)(其中R 1是氢原子,烷基,环烷基或环烷基)反应获得的钯 - 可被取代的苯基; R 2和R 3各自可以相同或不同,可以被取代的烷基,环烷基或苯基; R 4和R 5各自可以相同或不同,可以被取代的氢原子,烷基,环烷基或苯基; R SUP R 6,R 7,R 8和R 9各自各自相同或不同,烷基,环烷基 基团,可被取代的苯基,烷氧基,二烷基氨基,卤原子,苯基,苄基,萘基或卤代烷基; R 6和R 可以将R 8,R 8和R 9组合形成稠环,三亚甲基,四亚甲基g 或二十亚甲二氧基; p,q,r和s各自为0〜5的整数; 和p + q和r + s各自在0至5的范围内),其是用于制备各种有用化合物的新型和有效的催化剂
摘要:
Palladum-phosphine complexes obtained by reacting a 5 compound of formula (1) below with a palladium compound: F(I) (wherein R1 is a hydrogen atom, an alkyl group, a cycloalkyl group or a phenyl group which may be substituted; R2 and R3 are each, the same or different, an alkyl group, a cycloalkyl group or a phenyl group which may be substituted; R4 and R5 are each, the same or different, a hydrogen atom, an alkyl group, a cycloalkyl group or a phenyl group which may be substituted; R6, R7, R8 and R9 are each, the same or different, an alkyl group, a cycloalkyl group, a phenyl group which may be substituted, an alkoxyl group, a dialkylamino group, a halogen atom, a phenyl group, a benzyl group, a naphthyl group or a halogenated alkyl group; R6 and R7, R8 and R9 may be combined to form, each, a fused ring, a trimethylene group, a tetramethylene group or a 20 methylenedioxy group; p, q, r and s are each an integer of 0 to 5; and p+q, and r+s are each in the range of 0 to 5.), which is a novel and efficient catalyst for manufacturing various useful compounds.
摘要翻译:通过使下述式(1)的化合物与钯化合物F(I)(其中R 1是氢原子,烷基,环烷基或环烷基)反应获得的钯 - 可被取代的苯基; R 2和R 3各自可以相同或不同,可以被取代的烷基,环烷基或苯基; R 4和R 5各自可以相同或不同,可以被取代的氢原子,烷基,环烷基或苯基; R SUP R 6,R 7,R 8和R 9各自各自相同或不同,烷基,环烷基 基团,可被取代的苯基,烷氧基,二烷基氨基,卤原子,苯基,苄基,萘基或卤代烷基; R 6和R 可以将R 8,R 8和R 9组合形成稠环,三亚甲基,四亚甲基g 或二十亚甲二氧基; p,q,r和s各自为0〜5的整数; 和p + q和r + s各自在0至5的范围内),其是用于制备各种有用化合物的新型和有效的催化剂
摘要:
One aspect of the present invention relates to ligands for transition metals. A second aspect of the present invention relates to the use of catalysts comprising these ligands in transition metal-catalyzed carbon-heteroatom and carbon-carbon bond-forming reactions. The subject methods provide improvements in many features of the transition metal-catalyzed reactions, including the range of suitable substrates, reaction conditions, and efficiency.
摘要:
Aldehydes are catalytically combined with amines to form carboxamides in one step using an oxidant and a metal-ligand complex or metal/ligand composition.