Heterocycles p. 2611 - 2619 (1998)
Update date:2022-08-02
Topics:
Kakigami, Takuji
Baba, Kunihisa
Usui, Toshinao
Methyl 6-chloro-5-pivaloylamino-2H-1-benzopyran-8-carboxylate (4d) was prepared in good yield as a result of the thermal cylcization of methyl 5-chloro-4-pivaloylamino-2-propargyloxybenzoate (3d) using N,N-diethylaniline as a solvent.
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(2012)Doi:10.1002/anie.201202797
(2012)Doi:10.1002/anie.201204274
(2012)