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Copper‐Catalyzed Aerobic Oxidative Ring Expansion of Isatins: A Facile Entry to Isoquinolino‐Fused Quinazolinones
Author(s) -
Wang Dahan,
Xiao Fuhong,
Zhang Feng,
Huang Huawen,
Deng GuoJun
Publication year - 2021
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.202000368
Subject(s) - chemistry , catalysis , ring (chemistry) , combinatorial chemistry , oxidative phosphorylation , copper , reaction conditions , medicinal chemistry , organic chemistry , biochemistry
A copper‐catalyzed aerobic oxidative ring expansion reaction of isatins with 1,2,3,4‐tetrahydroisoquinoline for the synthesis of tetracyclic quinazolinones has been developed. This reaction is performed smoothly under simple conditions to give the corresponding products in moderate to good yields with good functional group tolerance. The capacity of the resultant 5 H ‐isoquinolino[1,2‐ b ]quinazolin‐8(6 H )‐one for a range of palladium‐catalyzed directing C—H activation has been further demonstrated, thus giving a broader access to diverse tetracyclic quinazolinones.