17186-57-1Relevant academic research and scientific papers
NOVEL THIAZINE OR PYRAZINE DERIVATIVES
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, (2008/06/13)
An object of the present invention is to synthesize novel compounds having 3-oxo-3, 4-dihydro-2H-1, 4-thiazine or 2-oxo-1, 2, 3, 4-tetrahydropyrazine as a main skeleton. The present invention relates to compounds represented by the following general formula [I] and salts thereof. In the formula, X is S or R6-(A2)n-N, R1 and R2 are H, alkyl, cycloalkyl or aryl, R3 and R4 are H, alkyl, cycloalkyl, aryl or aromatic heterocycles, R5 is H, alkyl, cycloalkyl, aryl or -A3-A4-R7, R6 is H, alkyl, cycloalkyl, OH, alkoxy, aryl, aryloxy or an aromatic heterocycle, R7 is H, alkyl, OH, alkoxy, aryl, aryloxy, amino, alkylamino, arylamino, an aromatic heterocycle or a nonaromatic heterocycle, A1 is alkylene, A2 is carbonyl or sulfonyl, A3 is alkylene, and A4 is carbonyl or oxalyl.
2-Substituted-1,2,3,4-tetrahydroisoquinolines and chiral 3-carboxyl analogues from N-benzotriazolylmethyl-N-phenethylamines
Katritzky, Alan R,He, Hai-Ying,Jiang, Rong,Long, Qiuhe
, p. 2427 - 2434 (2007/10/03)
N-Benzotriazolylmethyl-N-phenethylamines 5a-5c and 11a-11c cyclize in the presence of aluminum chloride to produce 1,2,3,4-tetrahydroisoquinolines 6a-6c and 12a-12c (70-89%) via electrophilic attack of a transient iminium cation X on the tethered phenyl r
