Construction of polycyclic systems by cyclocarbonylation. Part 3. A novel palladium- or platinum-catalyzed cyclocarbonylation reaction of cinnamyl compounds for synthesis of 1-naphthol derivatives
Construction of polycyclic systems by cyclocarbonylation. Part 3. A novel palladium- or platinum-catalyzed cyclocarbonylation reaction of cinnamyl compounds for synthesis of 1-naphthol derivatives
Palladiumcatalysedcyclocarbonylation of cinnamyl compounds gives 1-naphthol derivatives in good yields whereas the similar carbonylation of trans-β-bromostyrene yields a polymer containing benzindanone units.
Described are a series of novel photochromic benzopyran and naphthopyran compounds substituted with (1) a cyclopropyl group and (2) a phenyl, substituted phenyl, or 5-member aromatic heterocyclic group at the 2-position of the benzopyran or naphthopyran ring. Also described are organic host materials that contain or that are coated with such compounds. Articles such as ophthalmic or plano lenses that incorporate the novel pyran compounds or combinations of the novel pyran compounds with other complementary photochromic compounds are described.
The yellowish aphid pigment furanaphin, isolated from Aphis spiraecola and possessing cytotoxicity against HL-60 (human promyelocytic leukemia-60) cells, was synthesized by utilizing the Fries rearrangement assisted with a BF3·2AcOH complex as a key step. It was confirmed that the complex effectively mediated the reaction even though the compounds had an electron-withdrawing substituent.
Palladium- and platinum-catalyzed cyclocarbonylation reactions of substituted allyl acetates
作者:Youichi Ishii、Masanobu Hidai
DOI:10.1016/0022-328x(92)83237-c
日期:1992.4
The scope and limitation of novel palladium- and platinum-catalyzed cyclocarbonylation reactions of 3-arylallyl and 2,4-pentadienyl acetates are described. The detailed mechanism of these reactions is also discussed.
KOYASU YUKIO; MATSUZAKA HIROYUKI; HIROE YOSHITAKA; UCHIDA YASUZO; HIDAI M+, J. CHEM. SOC. CHEM. COMMUN.,(1987) N 8, 575-576