Beilstein J. Org. Chem.2018,14, 1120–1180, doi:10.3762/bjoc.14.98
; dibenzotropone; halobenzotropolone; halobenzotropone; tribenzotropone; tropone; Review
1. Introduction
Tropone (1) and tropolone (2) have fascinated organic chemists for well over one hundred years. The carbocycles 1 and 2 are a special variety of organic compounds and represent a nonbenzenoid type of aromatic
includes the chemistry of halo-benzotropones, halo-benzotropolones, dibenzotropones, dibenzotropolones, tribenzotropone, and tropoquinones in addition to parent benzotropones and benzotropolones. The numerous functionalized benzotroponoids are excluded from the review.
2. Chemistry of 4,5-benzotropone (11
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Graphical Abstract
Scheme 1:
Tropone (1), tropolone (2) and their resonance structures.