摘要:
An optically active, fluorine-containing carbonyl-ene product is produced by reacting a fluorine-containing α-ketoester with an alkene in the presence of a transition metal complex having an optically active ligand. There are Mode 1 of conducting this reaction in the absence of reaction solvent, Mode 2 of conducting this reaction in a solvent that is low in relative dielectric constant, and Mode 3 of conducting this reaction in a halogenated hydrocarbon-series solvent. In each of these three modes, it is possible to produce the optically active, fluorine-containing carbonyl-ene product with low cost.
摘要:
An optically active, fluorine-containing carbonyl-ene product is produced by reacting a fluorine-containing α-ketoester with an alkene in the presence of a transition metal complex having an optically active ligand. There are Mode 1 of conducting this reaction in the absence of reaction solvent, Mode 2 of conducting this reaction in a solvent that is low in relative dielectric constant, and Mode 3 of conducting this reaction in a halogenated hydrocarbon-series solvent. In each of these three modes, it is possible to produce the optically active, fluorine-containing carbonyl-ene product with low cost.
摘要:
It was found that a fluoro derivative can be produced by reacting a hydroxy derivative with sulfuryl fluoride (SO2F2) in the presence of an organic base or in the presence of an organic base and “a salt or complex comprising an organic base and hydrogen fluoride”. According to the present production process, it is not necessary to use perfluoroalkanesulfonyl fluoride, which is not preferable in industrial use, and it is possible to advantageously produce optically-active fluoro derivatives, which are important intermediates of medicines, agricultural chemicals and optical materials, specifically 4-fluoroproline derivatives, 2′-deoxy-2′-fluorouridine derivatives, optically-active α-fluorocarboxylate derivatives, and the like, even in a large scale.
摘要翻译:发现氟衍生物可以通过羟基衍生物与硫酰氟(SO 2 F 2)在有机碱的存在下或在有机碱和“含有机碱和氟化氢的盐或络合物”的存在下反应来制备, 。 根据本制造方法,不需要使用在工业上不优选的全氟烷基磺酰氟,可以有利地制造作为药物,农药,光学材料的重要中间体的光学活性氟衍生物, 特别是4-氟脯氨酸衍生物,2'-脱氧-2'-氟尿苷衍生物,光学活性α-氟代羧酸酯衍生物等,甚至大规模。
摘要:
It was found that a fluoro derivative can be produced by reacting a hydroxy derivative with sulfuryl fluoride (SO2F2) in the presence of an organic base or in the presence of an organic base and “a salt or complex comprising an organic base and hydrogen fluoride”. According to the present production process, it is not necessary to use perfluoroalkanesulfonyl fluoride, which is not preferable in industrial use, and it is possible to advantageously produce optically-active fluoro derivatives, which are important intermediates of medicines, agricultural chemicals and optical materials, specifically 4-fluoroproline derivatives, 2′-deoxy-2′-fluorouridine derivatives, optically-active α-fluorocarboxylate derivatives, and the like, even in a large scale.
摘要翻译:发现氟衍生物可以通过羟基衍生物与硫酰氟(SO 2 H 2 F 2)在有机碱的存在下或在有机碱存在下反应来制备 有机碱和“含有机碱和氟化氢的盐或络合物”。 根据本制造方法,不需要使用在工业上不优选的全氟烷基磺酰氟,可以有利地制造作为药物,农药,光学材料的重要中间体的光学活性氟衍生物, 特别是4-氟脯氨酸衍生物,2'-脱氧-2'-氟尿苷衍生物,光学活性α-氟代羧酸酯衍生物等,甚至大规模。
摘要:
There is provided a novel, useful dehydroxyfluorination agent containing sulfuryl fluoride (SO2F2) and an organic base that is free from a free hydroxyl group in the molecule. According to the present dehydroxyfluorination agent, it is not necessary to use perfluoroalkanesulfonyl fluoride, which is not preferable in large-scale use, and it is possible to advantageously produce optically-active fluoro derivatives, which are important intermediates of medicines, agricultural chemicals and optical materials, for example, 4-fluoroproline derivatives, 2′-deoxy-2′-fluorouridine derivatives, optically-active α-fluorocarboxylate derivatives, and monofluoromethyl derivatives, even in large scale.
摘要翻译:提供了含有硫酰氟(SO 2 F 2)和分子中不含游离羟基的有机碱的新型有用的脱羟基氟化剂。 根据现有的脱羟基氟化剂,不需要使用全氟烷基磺酰氟,其在大规模使用中是不优选的,并且可以有利地制备作为药物,农药和光学的重要中间体的光学活性氟衍生物 材料,例如4-氟脯氨酸衍生物,2'-脱氧-2'-氟尿苷衍生物,光学活性α-氟代羧酸酯衍生物和单氟甲基衍生物,甚至大规模。
摘要:
There is provided a novel, useful dehydroxyfluorination agent containing sulfuryl fluoride (SO2F2) and an organic base that is free from a free hydroxyl group in the molecule. According to the present dehydroxyfluorination agent, it is not necessary to use perfluoroalkanesulfonyl fluoride, which is not preferable in large-scale use, and it is possible to advantageously produce optically-active fluoro derivatives, which are important intermediates of medicines, agricultural chemicals and optical materials, for example, 4-fluoroproline derivatives, 2′-deoxy-2′-fluorouridine derivatives, optically-active α-fluorocarboxylate derivatives, and monofluoromethyl derivatives, even in large scale.
摘要翻译:提供了含有硫酰氟(SO 2 F 2)和分子中不含游离羟基的有机碱的新型有用的脱羟基氟化剂。 根据现有的脱羟基氟化剂,不需要使用全氟烷基磺酰氟,其在大规模使用中是不优选的,并且可以有利地制备作为药物,农药和光学的重要中间体的光学活性氟衍生物 材料,例如4-氟脯氨酸衍生物,2'-脱氧-2'-氟尿苷衍生物,光学活性α-氟代羧酸酯衍生物和单氟甲基衍生物,甚至大规模。
摘要:
An optically active 1-(fluoro-, trifluoromethyl- or trifluoromethoxy-substituted phenyl)alkylamine N-monoalkyl derivative represented by the formula 4 is produced by a process including (a) reacting an optically active secondary amine, represented by the formula 1, with an alkylation agent R2—X, in the presence of a base, thereby converting the secondary amine into an optically active tertiary amine represented by the formula 3; and (b) subjecting the tertiary amine to a hydrogenolysis, thereby producing the N-monoalkyl derivative, wherein R represents a fluorine atom, trifluoromethyl group or trifluoromethoxy group, n represents an integer of from 1 to 5, each of R1 and R2 independently represents an alkyl group having a carbon atom number of from 1 to 6, Me represents a methyl group, Ar represents a phenyl group or 1- or 2-naphthyl group, * represents a chiral carbon, and X represents a leaving group.
摘要:
1-β-D-Arabinofuranosyluracil in 3′,5′-hydroxyl-protected form is reacted with a trifluoromethanesulfonylating agent in the presence of an organic base to convert it into a 2′-triflate form, and then it is reacted with a fluorinating agent containing “a salt or complex formed by an organic base and hydrofluoric acid” to produce 2′-deoxy-2′-fluorouridine in 3′,5′-hydroxyl-protected form. A deprotecting agent is further caused to act thereon to obtain 2′-deoxy-2′-fluorouridine. The 2′-deoxy-2′-fluorouridine obtained can efficiently be purified by temporarily converting it into a 3′,5′-diacetyl form, recrystallizing the 3′,5′-diacetyl form, and then deacetylating it. Thus, high-purity 2′-deoxy-2′-fluorouridine can be produced.
摘要:
A process for producing a brominated acetal (represented by the formula 3) includes (a) brominating a trifluoromethyl-substituted acetophenone by Br2 in the presence of an alkylene diol. It is optional to produce a trifluoromethyl-substituted 2-alkoxyacetophenone derivative (represented by the formula 9) by (b) reacting the brominated acetal with a metal alkoxide, thereby converting the brominated acetal into an ether; and (c) hydrolyzing the ether in the presence of an acid catalyst to remove an acetal group from the ether, thereby producing the 2-alkoxyacetophenone derivative. Alternatively, the 2-alkoxyacetophenone can be produced by (a) reacting a trifluoromethyl-substituted phenacyl halide with an acetalization agent, thereby converting the phenacyl halide into an acetal; (b) reacting the acetal with a metal alkoxide, thereby converting the acetal into an ether; and (c) hydrolyzing the ether in the presence of an acid catalyst to remove the acetal group from the ether.
摘要翻译:制备溴化缩醛的方法(由式3表示)包括(a)在亚烷基二醇的存在下用Br 2 H 3溴化三氟甲基取代的苯乙酮。 (b)使溴化缩醛与金属醇盐反应,从而将溴化缩醛转化成醚,任选地制备三氟甲基取代的2-烷氧基苯乙酮衍生物(由式9表示) 和(c)在酸催化剂的存在下水解醚,以从乙醚中除去缩醛基,从而制备2-烷氧基苯乙酮衍生物。 或者,2-烷氧基苯乙酮可以通过以下方法制备:(a)使三氟甲基取代的苯甲酰甲基卤化物与缩醛化剂反应,从而将苯甲酰甲酰卤转化成缩醛; (b)使缩醛与金属醇盐反应,从而将缩醛转化成醚; 和(c)在酸催化剂存在下水解该醚,以从乙醚中除去缩醛基。
摘要:
A process for producing a brominated acetal (represented by the formula 3) includes (a) brominating a trifluoromethyl-substituted acetophenone by Br2 in the presence of an alkylene diol. It is optional to produce a trifluoromethyl-substituted 2-alkoxyacetophenone derivative (represented by the formula 9) by (b) reacting the brominated acetal with a metal alkoxide, thereby converting the brominated acetal into an ether; and (c) hydrolyzing the ether in the presence of an acid catalyst to remove an acetal group from the ether, thereby producing the 2-alkoxyacetophenone derivative. Alternatively, the 2-alkoxyacetophenone can be produced by (a) reacting a trifluoromethyl-substituted phenacyl halide with an acetalization agent, thereby converting the phenacyl halide into an acetal; (b) reacting the acetal with a metal alkoxide, thereby converting the acetal into an ether; and (c) hydrolyzing the ether in the presence of an acid catalyst to remove the acetal group from the ether.
摘要翻译:制备溴化缩醛的方法(由式3表示)包括(a)在亚烷基二醇的存在下用Br 2 H 3溴化三氟甲基取代的苯乙酮。 (b)使溴化缩醛与金属醇盐反应,从而将溴化缩醛转化成醚,任选地制备三氟甲基取代的2-烷氧基苯乙酮衍生物(由式9表示) 和(c)在酸催化剂的存在下水解醚,以从乙醚中除去缩醛基,从而制备2-烷氧基苯乙酮衍生物。 或者,2-烷氧基苯乙酮可以通过以下方法制备:(a)使三氟甲基取代的苯甲酰甲基卤化物与缩醛化剂反应,从而将苯甲酰甲酰卤转化成缩醛; (b)使缩醛与金属醇盐反应,从而将缩醛转化成醚; 和(c)在酸催化剂存在下水解该醚,以从乙醚中除去缩醛基。