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|English to Chinese translations [PRO]|
Science - Medical: Pharmaceuticals
|English term or phrase: triflating agent|
Synthesis of intermediate (V) of DX-9065a: Compound (V) has been obtained as follows: The reaction of 7-methoxy-1,2,3,4-tetrahydronaphthalen-2-one (VII) with trimethylsilyl cyanide using BF3 ethearate as catalyst gives 7-methoxy-3,4-dihydronaphthalene-2-carbonitrile (VIII), which is aromatized with sulfur and Pd/C to naphthalene (IX). The demethylation of (IX) with BBr3 in dichloromethane affords 7-hydroxynaphthalene-2-carbonitrile (X), which is finally converted into the triflate (V) with PhN(SO2CF3)2 as triflating agent. Alternatively, the triflation of 7-methoxy-2-naphthol (XI) as before gives the triflate (XII), which is converted into the previously obtained carbonitrile (IX) by reaction with Zn(CN)2 catalyzed by triphenylphosphine and palladium acetate in hot 1-methyl-2-pyrrolidone.
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Local time: 21:53
agent经常翻译成“剂”。triflating agent 翻译成“三氟甲磺酰化剂”是可以的。
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1. trifalting agent 也可以叫做 silylating agent（有关段落已copy如下），即甲硅烷基化介质
2. trifalting agent 的主要成份是：三氟甲基（或甲烷）磺酰，请看下面的所列段落。
As used herein and in the reaction schemes, the term “enol triflate or enol formation” is intended to include conventional and well-known enolate formation procedures and subsequent trapping of this enolate by the well-known triflating or silylating agents. Thus the ketones are treated with an organic base such as 2,6-di-tert-butyl-4-methyl-pyridine, sodium hydride, potassium hydride, lithium diisopropylamide or lithium bis(trimethylsilyl)amide in an inert organic solvent such as tetrahydrofuran, dimethylformamide or dichloromethane and the like. The resulting enolates are then reacted with triflic anhydride or 2-[N,N-bis(trifluoromethylsulfonyl)amino]pyridine and the like or an alkylsilyl halide or triflate.
Compounds of general formula (XXXI) can be made by treatment of a ketone of general formula (XXX) with a suitable triflating agent, such as trifluoromethanesulfonic anhydride, in the presence of a suitable base, such as N,N-diisopropylethylamine in a suitable inert solvent, such as dichloromethane.
A soluble polymer-supported triflating reagent: a high-throughput synthetic approach to ar
Org Lett Jun 08, 2000
[reaction: see text] The high-yielding synthesis and application of the first example of a polymer-supported reagent for the preparation of trifluoromethanesulfonates (triflates) is described. This new reagent efficiently triflates aryl alcohols and ...
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