Economical synthesis of novel class of heteroatom containing partially reduced polycyclic aromatic hydrocarbons |
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| Authors: | Ramendra Pratap Vishnu Ji Ram |
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| Institution: | a Department of Chemistry, The City College and The City University of New York, 160 Convent Avenue, New York, NY 10031, USA
b Department of Applied Chemistry, Institute of Engineering and Technology, Sitapur Road, Lucknow 226 021, India |
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| Abstract: | An efficient and convenient synthesis of 2-oxa- and 2-thia-3,4,7,8-tetrahydro-1H-benzoc]phenanthrenes has been described through base-induced ring transformation of 2-oxo-4-sec.amino-5,6-dihydro-2H-benzoh]chromene-3-carbonitriles by 4-oxotetrahydropyran and 4-oxotetrahydrothiopyran, respectively, in excellent yields. |
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| Keywords: | 2-Oxo-4-(piperidin-1-yl)-5 6-dihydro-2H-benzo[h]-chromene-3-carbonitriles Ring transformation Tetrahydropyran |
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