Microwave irradiation of ketoximes on wet silica supported sodium bismuthate under environmentally friendly solvent-free condition provides a fast, efficient and simple method for regeneration of ketones in high yields.

A K MITRA

A DE

N KARCHAUDHURI

University of Calcutta (informally known as Calcutta University or CU) is a collegiate public state university located in Kolkata, West Bengal, India.&nbsp;Within India it is recognized as a &quot;Five-Star University&quot; and accredited &quot;A&quot; Grade by National Assessment and Accreditation Council.

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The University of Calcutta has secured the Fifth position among the Universities of India in the prestigious &quot;Indian University Ranking 2019&quot; list, released by the NIRF of the Ministry of Human Resource Development, Government of India.

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It was established on 24 January 1857, and was one of the first institutions in Asia to be established as a multidisciplinary and Western-style university. Its alumni and faculty include several heads of state, heads of government, social reformers, prominent artists, only academy award winner and Dirac medal winner in India, many Fellows of the Royal Society and five Nobel laureates as of 2019 which is highest in South Asia.

University Of Calcutta

Synlett

A fast and high yielding one-pot synthesis of 3,4-dihydropyrimidin-2(1H)-ones from β-keto esters, urea and various aliphatic and aromatic aldehydes using montmorillonite KSF clay as a catalyst in solvent-free condition under microwave irradiation is described. The catalyst can also be recycled in these syntheses.

Clay catalysed synthesis of dihydropyrimidinones under solvent-free conditions

Hexamethylenetetramine has been exploited for the first time successfully as a catalyst for the Doebner reaction and Knoevenagel condensation along with the rate enhancement by microwave irradiation under solvent-free conditions.

Journal of Chemical Research - Part S

Microwave-assisted condensation reactions exploiting hexamethylenetetramine as a catalyst under solvent-free conditions

Microwave irradiation of ketosemicarbazones with wet antimony trichloride under solvent-free condition provides a fast, efficient and simple method for the regeneration of ketones in good yields.

Journal	Synlett
Publisher	Georg Thieme Verlag
ISSN	0936-5214