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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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