- An efficient and versatile route to the synthesis of 9,10-dihydro-3-formylphenanthrenes
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An innovative and efficient route to the synthesis of 9,10-dihydro-3-formylphenanthrenes 7 has been delineated through the ring transformation of 2-oxo-4-sec-amino-5,6-dihydro-2H-benzo[h]chromene-3-carbonitriles 4 with methyl glyoxaldimethylacetal 5 to ma
- Pratap, Ramendra,Ram, Vishnu Ji
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- An unusual synthesis of tetrahydrobenzo[f]isoquinolines
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A facile and short synthesis of 2-oxo-4-sec-amino-2,3,5,6-tetrahydrobenzo[f]isoquinoline-1-carbonitriles has been delineated through base catalyzed ring transformation of 5,6-dihydro-2-oxo-4-sec-amino-2H-benzo[h]chromene-3-carbonitrile by cyanoacetamide i
- Pratap, Ramendra,Raghunandan, Resmi,Maulik,Ram, Vishnu Ji
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- 2-Oxobenzo[h]chromene: a novel entry for the concise and efficient synthesis of indeno[1,2-c]phenanthrenes
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An efficient and concise synthesis of 7-sec-amino-5,13-dihydro-6H-indeno[1,2-c]phenanthrene-8-carbonitriles is described through base catalyzed ring transformation of 4-sec-amino-2-oxo-5,6-dihydro-2H-benzo[h]chromene-3-carbonitriles with 1-indanone in mod
- Pratap, Ramendra,Ram, Vishnu Ji
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- An efficient de novo synthesis of partially reduced phenanthrenes through C-C insertion
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(Chemical Equation Presented) An efficient and novel approach to the synthesis of highly congested 3-alkyl-, 4-alkyl-, 3-aryl-, 3,4-dialkyl-, 4-alkyl-3-aryl-, and 3,4-diaryl-9,10-dihydro-1-sec-aminophenanthrene-2- carbonitriles has been delineated through
- Pratap, Ramendra,Ram, Vishnu Ji
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- A non-catalytic approach to the synthesis of 5,6-dihydrobenzo[h]quinolines
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A concise synthesis of highly functionalized 5,6-dihydrobenzo[h]quinoline-3-carbonitriles is delineated through base induced ring transformation of 4-sec-amino-2-oxo-5,6-dihydro-2H-benzo[h]chromene-3-carbonitriles with S-methylisothiourea sulfate and 1-ca
- Pratap, Ramendra,Ram, Vishnu Ji
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- Acetyltrimethylsilane mediated synthesis of dihydrophenanthrenes
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An easy and efficient synthesis of phenanthrene derivatives through base catalyzed ring transformation of 4-sec-amino-2-oxo-5,6-dihydro-2H-benzo[h]chromene-3-carbonitriles with acetyltrimethylsilane is described in good yields. The advantage of this react
- Pratap, Ramendra,Ram, Vishnu Ji
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- A convenient synthesis of partially reduced benzo[c]phenanthrenes, its ketals and ketones
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A concise and convenient synthesis of various partially reduced 6-sec-amino-1,2,3,4,7,8-hexahydro-, 6-sec-amino-1,2,7,8-tetrahydrobenzo[c]phenanthrene-5-carbonitriles, 6-sec-amino-3,4,7,8-tetrahydro-1H-benzo[c]phenanthrene-2-one-5-carbonitrile cycloalkene
- Pratap, Ramendra,Raghunandan, Resmi,Mishra, Abhishek Kumar,Maulik,Gupta,Ram, Vishnu Ji
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p. 1458 - 1464
(2010/04/02)
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- An expeditious protocol for sesquiterpene-cored functionalized arenes from S-(-)-citronellal
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An expeditious straightforward synthesis of sesquiterpene-cored arenes functionalized with electron-withdrawing or electron-donating substituents is described and illustrated by Michael addition of S-(-)-citronellal on functionalized 2H-pyran-2-one in a s
- Goel, Atul,Verma, Deepti
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p. 2086 - 2089
(2009/09/06)
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- Economical synthesis of novel class of heteroatom containing partially reduced polycyclic aromatic hydrocarbons
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An efficient and convenient synthesis of 2-oxa- and 2-thia-3,4,7,8-tetrahydro-1H-benzo[c]phenanthrenes has been described through base-induced ring transformation of 2-oxo-4-sec.amino-5,6-dihydro-2H-benzo[h]chromene-3-carbonitriles by 4-oxotetrahydropyran
- Pratap, Ramendra,Ram, Vishnu Ji
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p. 2805 - 2807
(2009/09/30)
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- An efficient non-catalytic, regioselective approach to the synthesis of angularly fused polycyclic systems
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A novel approach to the synthesis of partially reduced different ring sizes of PAH analogs with sec.amino and nitrile functionalities is delineated through base-induced ring transformation of 4-sec.amino-2-oxo-5,6-dihydro-2H-benzo[h]chromene-3-carbonitril
- Pratap, Ramendra,Ram, Vishnu Ji
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scheme or table
p. 4239 - 4242
(2009/10/26)
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- Synthesis of partially reduced ferrocenylphenanthrenes from 2-oxobenzo[h]chromenes through C-C insertion
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An efficient and concise de novo synthesis of ferrocenyl tethered partially reduced phenanthrenes is described through base-catalyzed ring transformation of 4-sec-amino-2-oxo-5,6-dihydro-2H-benzo[h]chromene-3-carbonitriles with acetylferrocene.
- Pratap, Ramendra,Ram, Vishnu Ji
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p. 394 - 396
(2008/09/17)
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