4-Hydroxy-3-methyl-2-(2-propynyl)-2-cyclopentene-1-one synthesis
- Product Name:4-Hydroxy-3-methyl-2-(2-propynyl)-2-cyclopentene-1-one
- CAS Number:41301-27-3
- Molecular formula:C9H10O2
- Molecular Weight:150.17
90428-64-1
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41301-27-3
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Yield:41301-27-3 91%
Steps:
9 EXAMPLE 9
EXAMPLE 9 In the same flask as in Example 1, 20% sulfuric acid (10 ml) was charged, and dl-3-acetoxy-2-propargyl-3-methyl-4-cyclopentenone (1.92 g) was dropwise added thereto in 1 hour while keeping the inner temperature at 0° C. After completion of the dropwise addition, the resultant mixture was stirred at the same temperature as above for 3 hours. The reaction mixture was subjected to post-treatment and purification as in Example 1 to give 1.38 g of 4-hydroxy-2-propargyl-3-methyl-2-cyclopentenone. Yield, 91%.
References:
US4608442,1986,A
77806-76-9
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41301-27-3
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77087-22-0
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41301-27-3
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