OXA-[3+3] ANNULATION OF 1 H -BENZO[ f ]CHROMENE-2-CARBALDEHYDES AND 2-NAPHTHOLS: SYNTHESIS OF 7a H ,15 H -BENZO[ f ]BENZO[5,6]CHROMENO[2,3- b ]CHROMENES

Ирина А. Семёнова; Виталий А. Осянин; Дмитрий В. Осипов; Юрий Н. Климочкин

doi:10.1007/6287

OXA-[3+3] ANNULATION OF 1H-BENZO[f]CHROMENE-2-CARBALDEHYDES AND 2-NAPHTHOLS: SYNTHESIS OF 7aH,15H-BENZO[f]BENZO[5,6]CHROMENO[2,3-b]CHROMENES

Ирина А. Семёнова, Виталий А. Осянин, Дмитрий В. Осипов, Юрий Н. Климочкин

Abstract

A method for the preparation of polycondensed chromeno[2,3-b]chromenes was developed based on the formal [3+3] cycloaddition reaction between 1H-benzo[f]chromene-2-carbaldehydes and 2-naphthols. In the case of resorcinol, the bisannulation product formed with the participation of both hydroxy groups was isolated.

Keywords

1H-benzo[f]chromene-2-carbaldehydes; chromeno[2,3-b]chromenes; 2-naphthols; electrocyclization; formal [3+3] cycloaddition.

Full Text: PDF (Russian) Open Access

Supplementary File(s): None

Latvian Institute of Organic Synthesis - Aizkraukles iela, 21, Riga, LV-1006, Latvia - hgs@osi.lv

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