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7556750 
Journal Article 
Thermal decomposition reactions of N-alkylated 2-aminobiphenyls to carbazole and phenanthridine 
Creencia, EC; Horaguchi, T; , 
2006 
Yes 
Journal of Heterocyclic Chemistry
ISSN: 0022-152X 
WILEY 
HOBOKEN 
43 
6 
1441-1446 
English 
WOS:000242742000005 
Thermal cyclization reactions were examined by passing vapors of N-alkylated 2-aminobiphenyls 1a-c and 2 over calcium oxide at 450-600 degrees C under nitrogen carrier gas. The reactions yielded 9-methylcarbazole 3, carbazole 4, phenanthridine 5 and phenanthrene 6. The major product for the reactions of 1a, 1b and 2 was phenanthridine 5 while that of le was carbazole 4.