Cyclization of 1-(2-alkynylphenyl)-3, 3-dialkyltriazenes: a convenient, high-yield synthesis of substituted cinnolines and isoindazoles

DB Kimball, TJR Weakley…

文献索引：Vasilevsky, Sergei F.; Tretyakov, Eugene V. Liebigs Annalen, 1995 , # 5 p. 775 - 780

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被引用次数: 62

摘要

... Eugene, Oregon 97403-1253. ... Scheme 5 a. ... a Reagents and conditions: (a) MeI, Cs 2 CO 3 , DMF; (b) (i) HCl, NaNO 2 , (ii) Et 2 NH, K 2 CO 3 , H 2 O, MeCN; (c) Me 3 SiC⋮CH, PdCl 2 (PPh 3 ) 2 , CuI, NEt 3 ; (d) K 2 CO 3 , MeOH, THF; (e) Ac 2 O, pyr; (f) Bu 4 NF, EtOH, THF. ...