id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
eurjchem-54	Abdel-Rahman, Reda Mohammady; Makki, Mohammed Saleh Tawfik; Ali, Tarik El-Sayed; Ibrahim, Magdy Ahmed	1,2,4-Triazine Chemistry Part I: Orientation of cyclization reactions of functionalized 1,2,4-triazine derivatives	2010	10	.pdf	application/pdf	3984	290	63	N N N N CH3 NHNH2 Ph-N=C=X X= O,S 100 oC 185 oC N N NN N N CH3 Ph H N N N H N N N CH3 X H N Ph 93 94 92 185 oC 91% 82% Scheme 27    3‐Hydrazinoindolotriazine  derivative  (92)  underwent  sterically  controlled  regiospecific  heterocyclization  with  a  variety  of  one  carbon  cyclizing  agents  to  give  the  sterically  more  favored  linearly  annulated  10‐methyl‐1,2,4‐ triazolo[4`,3`:2,3][1,2,4]triazino[5,6‐b]indoles (96) by fusion of  the hydrazide derivatives  (95)  above  their melting point.  However, the only isomer 7 was isolated in good yield due  to  the  direction  of  enolization  of  1,3‐diketone  being  towards  aryl group (Scheme 2)	cache/eurjchem-54.pdf	txt/eurjchem-54.txt