Studies on the Pyrimidine Derivatives. XXXI. Reactions of Ethyl 2-Methoxymethylene-3-ethoxypropionate with Ureas
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Ethyl 2-methoxymethylene-3-ethoxypropionate (III) undergoes condensation with urea, and N-substituted urea in ethanol solution in the presence of hydrochloric acid. With urea, III gave ethyl 2-oxo-1, 2, 3, 4-tetrahydro-5-pyrimidinecarboxylate (V), with N-methyl-urea a mixture of ethyl 2-oxo-methyl-1, 2, 3, 4-tetrahydro-5-pyrimidinecarboxylate (XIII) and its isomeric 1-methyl compound (XIV), which was separated into each isomer, and with N-phenylurea the 1-phenyl compound (XV) was exclusively obtained. Conversion into pyrimidines was achieved by dehyrogenation and subsequent chlorination of V.
収録刊行物
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- CHEMICAL & PHARMACEUTICAL BULLETIN
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CHEMICAL & PHARMACEUTICAL BULLETIN 12 (7), 804-808, 1964
公益社団法人 日本薬学会
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詳細情報 詳細情報について
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- CRID
- 1390001204171876224
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- NII論文ID
- 110003619386
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- NII書誌ID
- AA00602100
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- ISSN
- 13475223
- 00092363
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- PubMed
- 14206932
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- PubMed
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可