Synthesis of Pyrimidopyrimidinediones in a Deep Eutectic Reaction Mixture
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作者:
Gore, Sangram
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Indian Inst Technol, Dept Chem, Madras 600036, Tamil Nadu, India
Univ Regensburg, Inst Organ Chem, D-93040 Regensburg, GermanyIndian Inst Technol, Dept Chem, Madras 600036, Tamil Nadu, India
Gore, Sangram
[1
,2
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Baskaran, Sundarababu
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Indian Inst Technol, Dept Chem, Madras 600036, Tamil Nadu, IndiaIndian Inst Technol, Dept Chem, Madras 600036, Tamil Nadu, India
Baskaran, Sundarababu
[1
]
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机构:
Koenig, Burkhard
[2
]
机构:
[1] Indian Inst Technol, Dept Chem, Madras 600036, Tamil Nadu, India
[2] Univ Regensburg, Inst Organ Chem, D-93040 Regensburg, Germany
An efficient and general synthesis of hexahydropyrimidopyrimidinediones has been developed employing a low melting L-(+)-tartaric acid-dimethylurea mixture as reaction medium. The melt acts at the same time as solvent, catalyst and reactant. Functionalized hexahydropyrimidopyrimidinediones are obtained in good to excellent yields after simple work-up.