Diazo Reactions with Unsaturated Compounds: IX. ortho-, meta-, and para-Nitrophenylsulfonyl-1,3-butadienes in Reaction with 1-Aryl-3,3-dimethyl-1-triazenes
作者:V. M. Naidan、V. V. Smalius
DOI:10.1007/s11176-005-0275-1
日期:2005.4
1-(m-Nitrophenylsulfonyl)- and 1-(p-nitrophenylsulfonyl)-1,3-butadienes in aqueous acetone in the presence of HCl and copper(I) or copper(II) chloride react with 1-aryl-3,3-dimethyl-1-triaenes to form 1-(m-nitrophenylsulfonyl)- and 1-(p-nitrophenylsulfonyl)-4-aryl-3-chloro-1-butenes, respectively. 1-(o-Nitro-phenylsulfonyl)-1,3-butadiene fails to react in similar conditions.
Diazo reactions with unsaturated compounds: VIII. Reaction of 1,3-butadiene and isoprene with aromatic and aliphatic-aromatic triazenes in the presence of sulfur(IV) oxide
作者:V. M. Naidan、V. V. Smalius
DOI:10.1007/s11176-005-0016-5
日期:2004.9
1,3-Butadiene and 2-methyl-1,3-butadiene react with 1,3-diphenyltriazene, 1,3-di-p-tolyltriazene, and 1-aryl-3,3-dimethyl-1-triazenes in a sulfur(IV) oxide-saturated water-acetic acid-acetone solution containing NaCl or hydrochloric acid, and catalytic amounts of copper(I) chloride to form 1,4-arylsulfonyl-chlorination products.
Diazo Reactions with Unsaturated Compounds: X. Reactions of p-Chloro- and p-Bromophenysulfonyl-1,3-Butadienes with Aryldiazonium Chlorides and 1-Aryl-3,3-dimethyl-1-triazenes
作者:V. M. Naidan、V. V. Smalius
DOI:10.1007/s11176-005-0508-3
日期:2005.11
1-(p-Chlorophenylsulfonyl)- and 1-(p-bromophenylsulfonyl)-1,3-butadienes in aqueous acetone solutions in the presence of cuprous chloride or cupric chloride react with aryldiazonium chlorides and 1-aryl-3,3-dimethyl-1-triazenes to form 1-(p-chlorophenylsulphonyl)- and 1-(p-bromophenylsulfonyl)-4-aryl-3-chloro-1-butenes, respectively.
The bifunctional Lewis acidic ionicliquid (LAIL) catalyzed multicomponent arylsulfonation of phenols with aryl triazenes and DABSO was developed. By using LAILs as redox and Lewis acidic catalysts without any additional promoter or ligand through an N2 extrusion/SO2 insertion sequence, various aryl triazenes were transformed into aryl sulfonyl radicals by coupling with DABSO, and these were then coupled
开发了双功能路易斯酸性离子液体 (LAIL) 催化苯酚与芳基三氮烯和 DABSO 的多组分芳基磺化。通过使用 LAILs 作为氧化还原和路易斯酸性催化剂,无需任何额外的促进剂或配体,通过 N 2挤出/SO 2插入序列,各种芳基三氮烯通过与 DABSO 偶联转化为芳基磺酰基自由基,然后与苯氧基自由基偶联得到相应的二芳基砜以良好的收率。良好的官能团耐受性、克级反应和避免使用 SO 2气体进一步证明了该芳基磺化反应的实用性。