著者

Atsuhiro Osuka Hitomi Suzuki Kazuhiro Maruyama

出版者

(社)日本化学会

雑誌

Chemistry Letters (ISSN:03667022)

巻号頁・発行日

vol.11, no.5, pp.653-656, 1982-05-05 (Released:2006-03-27)

参考文献数

12

被引用文献数

1

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Photolysis of the title compounds in benzene gave spirophthalides and E- and Z-alkylidene phthalides via preferential α-cleavage at the more crowded side. On the basis of quantum yields and triplet lifetimes, this preference is indicated to arise from the different efficiencies of the radical recombination of possible biradicals.

著者

Kazuhiro Maruyama Atsuhiro Osuka Katsuhiko Nakagawa Kenzo Tabuchi Hirohito Shimizu Hitomi Suzuki

出版者

(社)日本化学会

雑誌

Chemistry Letters (ISSN:03667022)

巻号頁・発行日

vol.15, no.11, pp.1849-1852, 1986-11-05 (Released:2006-03-27)

参考文献数

7

被引用文献数

1

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Irradiation of 2-substituted 4-alkylidene-2,3-epoxy-1-tetralone results in the rearrangement to 3-(2-oxoalkylidene)-1-indanone or the E-Z isomerization around the double bond. These photoreactions are suggested to occur from the (π,π*) triplet excited state.

著者

Kazuhiro Maruyama Hiroko Yamada Atsuhiro Osuka

出版者

(社)日本化学会

雑誌

Bulletin of the Chemical Society of Japan (ISSN:00092673)

巻号頁・発行日

vol.63, no.12, pp.3462-3466, 1990 (Released:2006-06-05)

参考文献数

19

被引用文献数

5

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We applied the Chemically Induced Dynamic Nuclear Polarization (CIDNP) technique to the photochemical reaction of pheophytin a (P1) and 4-methoxyphenol (1) in benzene-d6. The observed CIDNP effects were explained in terms of reversible electron-transfer reactions from 1 to 3(P1)* and from (P1)\ ewdot to (1)\underset.+. The polarized signals of P1 were induced from the in-cage recombination of the triplet radical ion pair.