Reference

Linearly condensed peri-hydroxy aromatic compounds derived from the cycloaddition reaction of homophthalic anhydrides with dienophiles

Linearly condensed peri-hydroxy aromatic compounds derived from the cycloaddition reaction of homophthalic anhydrides with dienophiles. Tamura, Yasumitsu; Wada, Akimori; Sasho, Manabu; Kita, Yasuyuki (Fac. Pharm. Sci., Osaka Univ., Suita 565, Japan). Chem. Pharm. Bull., 31(8), 2691-7 (English) 1983. CODEN: CPBTAL. ISSN: 0009-2363. DOCUMENT TYPE: Journal CA Section: 25 (Benzene, Its Derivatives, and Condensed Benzenoid Compounds) Thermal treatment of homophthalic anhydrides and its 8-methoxy deriv. with various dienophiles (naphthoquinones, alkynes, N-phenylmaleimide) caused cycloaddn. with spontaneous extrusion of CO2 to give the corresponding linearly condensed peri-hydroxy arom. 3469-06-5 and 762-42-5 which are cas registry numbers of substances are two of reagents here. compds. in considerable yields. A possible mechanism for these reactions is proposed. .

Thermal addition reactions to benzocyclobutenones studied by flash photolysis

Thermal addition reactions to benzocyclobutenones studied by flash photolysis. Schiess, P.; Eberle, M.; Huys-Francotte, M.In this study，3469-06-5 is also used.; Wirz, J. (Inst. Org. Chem., Univ. Basel, Basel CH-4056, Switz.). Tetrahedron Lett., 25(21), 2201-4 (English) 1984. CODEN: TELEAY. ISSN: 0040-4039. DOCUMENT TYPE: Journal CA Section: 22 (Physical Organic Chemistry) Ortho-quinoid vinylketenes e.g. I have been generated through flash photolysis of benzocyclobutenones e.g. II. A kinetic study of intermol. addn. reaction of I competing with the recyclization I?II reveals strikingly different substituent effects for the addn. of methanol and of dienophiles. .