专利号:US-5175302-A 优先权日:1987-07-13 标 题 :Nucleophilic fluoroalkylation of aldehydes 发明人:STAHLY G PATRICK 权利人:ETHYL CORP 摘要:Aryl difluoromethyl sulfone adds to aldehydes under phase transfer conditions to give novel substituted alcohols of the general formula n n RCH(OH)CF.sub.2 SO.sub.2 Ar (I) n n wherein R is an aryl, cycloaliphatic, sec- or tert-aliphatic, or heterocyclic group and Ar is an aryl group. The substituted alcohols of formula I are of particular utility as intermediates in the synthesis of a variety of useful end products. For example, the products of formula I may be utilized in desulfonylation reactions, oxidation reactions and fluorination reactions.
专利号:US-4837327-A 优先权日:1987-07-13 标 题 :Process for nucleophilic fluoroalkylation of aldehydes 发明人:STAHLY G PATRICK 权利人:ETHYL CORP 摘要:Aryl difluoromethyl sulfone adds to alkehydes under phase transfer conditions to give novel substituted alcohols of the general formula n n RCH(OH)CF.sub.2 SO.sub.2 Ar (I) n n wherein R is an aryl, cycloaliphatic, sec- or tert-aliphatic, or heterocyclic group and Ar is an aryl group. The substituted alcohols of formula I are of particular utility as intermediates in the synthesis of a variety of useful end products. For example, the products of formula I may be utilized in desulfonylation reactions, oxidation reactions and fluorination reactions.
专利号:US-4999429-A 优先权日:1989-01-09 标 题 :Process for the preparation of α,α,β-1-trifluoro-1-olefinic derivatives 发明人:STAHLY G PATRICK 权利人:ETHYL CORP 摘要:Aryl difluoromethyl sulfone adds to aldehydes under phase transfer conditions to give novel substituted alcohols of the general formula n n RCH(OH)CF.sub.2 SO.sub.2 Ar (I) n n wherein R is an aryl, cycloaliphatic, sec- or tert-aliphatic, or heterocyclic group and Ar is an aryl group. The substituted alcohols of formula I are of particular utility as intermediates in the synthesis of a variety of useful end products. For example, the products of formula I may be utilized in desulfonylation reactions, oxidation reactions and fluorination reactions.
专利号:US-7119232-B2 优先权日:2004-03-26 标题 :Nucleophilic substitution reactions of difluorormethyl phenyl sulfone with alkyl halides leading to the facile synthesis of terminal 1,1-difluoro-1-alkenes and difluoromethylalkanes 发明人:PRAKASH G K SURYA; HU JINBO; OLAH GEORGE A; WANG YING 权利人:UNIV SOUTHERN CALIFORNIA 摘要:(Benzenesulfonyl)difluoromethyl anion, in situ generated from difluoromethyl phenyl sulfone and a base, was found to easily undergo nucleophilic substitution reactions (S N 2) with primary alkyl halides, elemental halogens, and perfluoroalkyl halides with good selectivity. The formed (benzenesufonyl)difluoromethylalkanes are useful intermediates for the facile preparation of 1,1-difluoro-1-alkenes and difluoromethylalkanes. Thus, difluoromethyl phenyl sulfone acts as both “CF 2 â•?â€? and “CF 2 H − â€? synthons
专利号:US-2006052643-A1 优先权日:2004-03-26 标题:Nucleophilic substitution reactions of difluorormethyl phenyl sulfone with alkyl halides leading to the facile synthesis of terminal 1,1-difluoro-1-alkenes and difluoromethylalkanes
专利号:WO-2005097739-A2 优先权日:2004-03-26 标 题 :Nucleophilic substitution reactions of difluoromethyl phenyl sulfone with alkyl halides leading to the facile synthesis of terminal 1,1-difluoro-1-alkenes and difluoromethylalkanes
[参考文献]: Chuanfa Ni, Et Al. A Remarkably Efficient Fluoroalkylation Of Cyclic Sulfates And Sulfamidates With Phso2Cf2H: Facile Entry Into Beta-Difluoromethylated Or Beta-Difluoromethylenated Alcohols And Amines. Angew Chem Int Ed Engl. 2007;46(5):786-9. [参考文献]: Chuanfa Ni, Et Al. Nucleophilic Fluoroalkylation Of Alpha,Beta-Enones, Arynes, And Activated Alkynes With Fluorinated Sulfones: Probing The Hard/soft Nature Of Fluorinated Carbanions. J Org Chem. 2008 Aug 1;73(15):5699-713. [参考文献]: G K Surya Prakash, Et Al. Difluoromethyl Phenyl Sulfone, A Difluoromethylidene Equivalent: Use In The Synthesis Of 1,1-Difluoro-1-Alkenes. Angew Chem Int Ed Engl. 2004 Oct 4;43(39):5203-6. [参考文献]: G K Surya Prakash, Et Al. Nucleophilic Difluoromethylation Of Primary Alkyl Halides Using Difluoromethyl Phenyl Sulfone As A Difluoromethyl Anion Equivalent. Org Lett. 2004 Nov 11;6(23):4315-7. [参考文献]: G K Surya Prakash, Et Al. Preparation Of Tri- And Difluoromethylsilanes Via An Unusual Magnesium Metal-Mediated Reductive Tri- And Difluoromethylation Of Chlorosilanes Using Tri- And Difluoromethyl Sulfides, Sulfoxides, And Sulfones. J Org Chem. 2003 May 30;68(11):4457-63.
合成参考文献
摘要:Gouverneur, V.; Lozano, O., Science of Synthesis: Stereoselective Synthesis, (2011) 3, 902. 摘要:Gouverneur, V.; Lozano, O., Science of Synthesis: Stereoselective Synthesis, (2011) 3, 903. 摘要:Gouverneur, V.; Lozano, O., Science of Synthesis: Stereoselective Synthesis, (2011) 3, 908. 摘要:Hu, J.; Ni, C., Science of Synthesis: C-1 Building Blocks in Organic Synthesis, (2013) 2, 411. 摘要:Zhu, H.; Fan, Q., Science of Synthesis: Knowledge Updates, (2024) 3, 380.