Palladium-catalyzed one-pot Suzuki–Miyaura cross coupling followed by oxidative lactonization: a novel and efficient route for the one-pot synthesis of benzo[c]chromene-6-ones
2013
Singha, Raju | Roy, Soumyabrata | Nandi, Sukla | Ray, Priyanka | Ray, Jayanta K.
A number of 6H-benzo[c]chromene-6-ones, 5H-naphtho[1,2-c]chrome-5-ones, and 6H-naphtho[2,1-c]chromene-6-one have been synthesized starting with 2-hydroxyphenylboronic acid and o-bromobenzaldehyde or o-bromonaphthalene carboxaldehyde derivatives via a one-pot Suzuki–Miyaura cross coupling followed by oxidative lactonization reactions. The overall transformation consists of three reactions: Suzuki–Miyaura cross coupling, hemi-acetal formation, and oxidation.
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