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tianjun.6666½ð³æ (СÓÐÃûÆø)
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Photochemical synthesis of 1,2,5,6-tetrahydro-2,2,4,6,6-pentamethyl pyrimidine and 2,2,6,6-tetramethyl-4-piperidinone. Ballardini, Roberto; Borzatta, Valerio; Gandolfi, Maria Teresa; Scrima, Roberto. Ist. FRAE, CNR, Bologna, Italy. Research Disclosure (1993), 354 701-3. CODEN: RSDSBB ISSN: 0374-4353. RD 354060 19931010 Journal; Patent written in English. Priority: RD 1993-354060 19931010. CAN 120:270292 AN 1994:270292 CAPLUS Abstract The synthesis of 1,2,5,6-tetrahydro-2,2,4,6,6-pentamethyl pyrimidine (acetonine; I) by photochem. means starting with acetone and ammonia is described. Trials to get 2,2,6,6-tetramethyl-4-piperidinone (triacetonamine; II) by photochem. conversion of I are also reported. |
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