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Br<jats:sub>2<\/jats:sub> was generated by the vaporization of carbon oxides and HBr through oxidative photodecomposition of brominated methanes under a 20\u2005W low\u2010pressure mercury lamp, wherein the amount and situations of Br<jats:sub>2<\/jats:sub> generation were photochemically controllable. Liquid CH<jats:sub>2<\/jats:sub>Br<jats:sub>2<\/jats:sub> can be used not only as an organic solvent but also for the photoresponsive molecular storage of Br<jats:sub>2<\/jats:sub>, which is of great technical benefit in a variety of organic syntheses and in materials science. By taking advantage of the in situ generation of Br<jats:sub>2<\/jats:sub> from the organic solvent itself, many organobromine compounds were synthesized in high practical yields with or without the addition of a catalyst. Herein, Br<jats:sub>2<\/jats:sub> that was generated by the photodecomposition of CH<jats:sub>2<\/jats:sub>Br<jats:sub>2<\/jats:sub> retained its reactivity in solution to undergo essentially the same reactions as those that were carried out with solutions of Br<jats:sub>2<\/jats:sub> dissolved in CH<jats:sub>2<\/jats:sub>Br<jats:sub>2<\/jats:sub> that were prepared without photoirradiation. Furthermore, HBr, which was generated during the course of the photodecomposition of CH<jats:sub>2<\/jats:sub>Br<jats:sub>2<\/jats:sub>, was also available for the substitution of the OH group for the Br group and for the preparation of the HBr salts of amines. Furthermore, the photochemical generation of Br<jats:sub>2<\/jats:sub> from CH<jats:sub>2<\/jats:sub>Br<jats:sub>2<\/jats:sub> was available for the area\u2010selective photochemical bleaching of natural colored plants, such as red rose petals, wherein Br<jats:sub>2<\/jats:sub> that was generated photochemically from CH<jats:sub>2<\/jats:sub>Br<jats:sub>2<\/jats:sub> was painted onto the petal to cause radical oxidations of the chromophoric anthocyanin molecules.<\/jats:p>","DOI":"10.1002\/asia.201200322","type":"journal-article","created":{"date-parts":[[2012,6,18]],"date-time":"2012-06-18T13:36:43Z","timestamp":1340026603000},"page":"2240-2252","source":"Crossref","is-referenced-by-count":15,"title":["Brominated Methanes as Photoresponsive Molecular Storage of Elemental Br<sub>2<\/sub>"],"prefix":"10.1002","volume":"7","author":[{"given":"Kazumitsu","family":"Kawakami","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Akihiko","family":"Tsuda","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2012,6,18]]},"reference":[{"key":"e_1_2_6_1_2","volume-title":"Ullmann\u2019s Encyclopedia of Industrial Chemistry: Bromine Compounds","author":"Dagani M. 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