The directed lithiation of some 3-acylchromone acetals

被引：11
作者：
Daia, GE
Gabbutt, CD [1 ]
Hepworth, JD
Heron, BM
Hibbs, DE
Hursthouse, MB
机构：
[1] Univ Cent Lancashire, Dept Chem, Preston PR1 2HE, Lancs, England
[2] Univ Wales Coll Cardiff, Dept Chem, Cardiff CF1 3TB, S Glam, Wales
来源：
TETRAHEDRON LETTERS | 1998年 / 39卷 / 10期
关键词：
D O I：
10.1016/S0040-4039(97)10733-X
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
3-Acylchromone acetals are lithiated at C-2. Subsequent electrophilic trapping gives chromones 4 together with a ring-contracted dimer 6, During the formation of some acetals, an acid-catalysed rearrangement to a 2-substituted 3-formylchromone acetal is observed. (C) 1998 Elsevier Science Ltd. All rights reserved.
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页码：1215 / 1218
页数：4
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