Resorcinol → Chromone

Participants

Reaction Steps

Alternatively, the resorcinol can be reacted with methyl crotonic acid according to the method of Fahrenholtz [J. Am. Chem. Soc. 89 5934 (1967)] to give the benzopyran-4-one which in turn is reacted with a Grignard or other organometallic compound to give the desired benzopyran.

Provenance & Evidence