Access to Highly Strained Tricyclic Ketals Derived from Coumarins.
Access to Highly Strained Tricyclic Ketals Derived from Coumarins.
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从香豆素衍生的高应变三环酮的获取。
DOI:
10.1021/acs.joc.2c00018
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发表时间:
2022-03-18
期刊:
影响因子:
--
通讯作者:
Trippier PC
中科院分区:
文献类型:
--
作者:
Jonnalagadda SK;Huwaimel BI;Jonnalagadda S;Garrison JC;Trippier PC
Synthesis of highly strained fused substituted dihydrobenzopyran cyclopropyl lactones derived from coumarin carboxylates are reported. Substrate scope tolerates a variety of 6- and 8-substituents on the coumarin ring. Substitution at the 5- or 7-position is resistant to tricyclic lactone formation except with 7-methyl substitution. Benzamide-containing coumarins afford the tricyclic ketal. A plausible mechanism is proposed for the formation of the fused lactone; intramolecular rearrangement of trans cyclopropyl methyl ketones with phenolic acetate via the formation of a hemiacetal.
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影响因子:
1.8
作者:
LITTLE, RD;DAWSON, JR
通讯作者:
DAWSON, JR
影响因子:
8.4
作者:
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通讯作者:
Feng X
影响因子:
2.1
作者:
BOJILOVA, A;TRENDAFILOVA, A;RODIOS, NA
通讯作者:
RODIOS, NA
影响因子:
3.6
作者:
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通讯作者:
Pathak, Tanmaya
影响因子:
3.6
作者:
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通讯作者:
Zeng, Xing-Ping