An eco-friendly synthesis and antimicrobial activities of dihydro-2H-benzo- and naphtho-1,3-oxazine derivatives
作者:Bijoy P. Mathew、Awanit Kumar、Satyasheel Sharma、P.K. Shukla、Mahendra Nath
DOI:10.1016/j.ejmech.2009.12.058
日期:2010.4
3]oxazin-3(4H)-yl)ethane derivatives was obtained through an eco-friendly Mannich type condensation–cyclization reaction of phenols or naphthols with formaldehyde and primary amines in water at ambient temperature. Preliminary in vitro antimicrobialactivity of the synthesized compounds was assessed against six pathogenic fungi, two Gram-negative and two Gram-positive bacteria. Some of the screened compounds
One pot synthesis of [1,3]-oxazine and [1,3]-thiazine derivatives under thermal and microwave conditions
作者:S. Tumtin、I. T. Phucho、A. Nongpiur、R. Nongrum、J. N. Vishwakarma、B. Myrboh、R. L. Nongkhlaw
DOI:10.1002/jhet.280
日期:——
efficient synthesis of substituted benzo [1,3] oxazine and benzo [1,3] thiazine derivativesunder conventional heating, as well as microwave irradiation is reported. The compounds were obtained by the reaction of electron rich phenols, formaldehyde, and aromatic amines in methanol. Reactions which take 12–16 hr under conventional heating were successfully completed within a few minutes undermicrowave irradiation