3,5-Diarylisoxazoles and 1,3,5-triarylpyrazolines are synthesized via Michael addition of "hydroxylamine hydrochloride, phenylhydrazine" respectively over chalcones followed by cyclization using K 2 CO 3 as solid support. Reactions are shown to be highly regioselective regardless of the nature of the substituent in the substrates and afforded single isoxazole and pyrazoline isomer in excellent yields.

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Imidazole derivatives R 0190Environmentally Benign Approach to Imidazole-2-thiones. -A microwave-promoted synthesis of substituted imidazolethiones (III) (12 examples) from benzoin (I) and substituted thioureas (II) is achieved under solvent-free conditions . -(KIDWAI*, M.; KUKREJA, S.; RASTOGI, S.; SINGHAL, K.; Indian J. Chem., Sect.

A green route for the synthesis of multi-substituted 2,3-dihydro-xanthenone derivatives using ionic liquid as solvent and amino acid as promoter is described. The reaction is simple and proceeds well at room temperature and devoid of the use of any harmful catalyst or solvent. This is an efficient technique.Key words: xanthene, ionic liquid, glycine, room temperature.

A convenient solvent‐free one‐pot synthesis of 1,3,5,7‐tetraaryl‐1,3,4,7‐tetrahydro‐2‐thio‐xopyrrolo[2,3‐d]pyrimidin‐4‐one derivatives using supported reagents under microwave irradiation is described. © 2007 Wiley Periodicals, Inc. Heteroatom Chem 18:617–621, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/hc.20355

Isoxazole derivatives R 0240 K 2 CO 3 -Mediated Regioselective Synthesis of Isoxazoles and Pyrazolines. -An environmentally friendly and highly regioselective approach to 3,5-diarylisoxazoles and 1,3,5-triarylpyrazolines is reported. -(KIDWAI*, M.; KUKREJA, S.; THAKUR, R.; Lett. Org. Chem. 3 (2006) 2, 135-139; Dep. Chem., Univ. Delhi, Delhi 110 007, India; Eng.) -Jannicke 39-140

No abstract

Novel 1,2,4-Triazepines. -[starting from unsymmetric diarylpropenones and aminoguanidine hydrochloride as polynucleophile rendering NNCN group]. -(KIDWAI*, M.; KUKREJA, S.; SINGHAL, K.; MISHRA, N. K.; Indian J. Chem., Sect. B: Org. Chem. Incl. Med. Chem. 55 (2016) 5, 585-589 ; Green Chem. Res. Lab., Dep. Chem., Univ. Delhi, Delhi 110 007, India; Eng.) -C. Cyrus -193 40