Heck-type reactions of allylic alcohols -: Part IV:: (2-Substituted)-1-indanones via 5-endo-trig cyclizations

被引:22
|
作者
Zawisza, Anna Maria [1 ]
Ganchegui, Benjamin [1 ]
Gonzalez, Ivan [1 ,2 ]
Bouquillon, Sandrine [1 ]
Roglans, Anna [2 ]
Henin, Francoise [1 ]
Muzart, Jacques [1 ]
机构
[1] Univ Reims, CNRS, UMR React Select & Applicat, F-51687 Reims 2, France
[2] Univ Girona, Dept Chem, Girona, Spain
关键词
palladium; catalysis; heck reaction; cyclization; allylic alcohol; DMF; cinchonine; microwaves;
D O I
10.1016/j.molcata.2007.12.021
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Various conditions have been tested to obtain efficiently 2-methyl-1-indanone via the Pd-catalyzed 5-endo-trig cyclization of 1-(o-bromophenyl)2-methylprop-2-en-1-ol. High yield (97%) was obtained at 120 degrees C in DMF with Pd(OAc)(2)/cinchonine as the catalytic system and NaHCO3 as the base. Use of this procedure for the synthesis of other substituted indanones led to lower yields but replacing thermal heating by microwave heating improved greatly the results. (c) 2007 Elsevier B.V. All rights reserved.
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页码:140 / 145
页数:6
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