참여 물질
| 역할 | 이름 | HCID | 투입량 |
|---|
| 반응물 | Water | HCID 962 | — |
| 반응물 | Sodium Hydroxide | HCID 14798 | — |
| 반응물 | 2-Ethoxyphenol | HCID 66755 | — |
| 반응물 | (3-Phenyloxiranyl)methanol | HCID 89553 | — |
| 촉매 | Tributylmethylammonium chloride | HCID 91822 | — |
| 용매 | Dichloromethane | HCID 6344 | — |
| 생성물 | (2RS,3RS)-3-(2-Ethoxyphenoxy)-1,2-dihydroxy-3-phenylpropane | HCID 13479304 | 60.5% |
반응 단계
Water (800 mL), sodium hydroxide (50%, 83.1 mL), tributylmethyl-ammonium chloride (75%, 27.5 ml), and 2-ethoxyphenol (306.72 g) were combined and stirred at 20-25° C. The methylene chloride solution of 2,3-epoxy-3-phenylpropanol from Example 1 was added, and the two phase mixture was stirred and heated to 40° C. internal temperature. The methylene chloride was distilled at atmospheric pressure over a 3-4 hour period. When the methylene chloride had been removed, the internal temperature was raised to 60° C. for 2 hours. The mixture was cooled to below 30° C., toluene (1200 ml) was added, and the mixture was stirred for 5 minutes. The phases were separated and the aqueous phase was extracted with toluene (800 mL). The toluene solutions were combined and washed with 1 N NaOH (2×400 ml) and with water (400 mL) at approximately 25° C. The toluene solution was concentrated under partial vacuum maintaining an internal temperature of 40-50° C. The residual oil was dissolved in methyl t-butyl ether (760 ml), and water content was verified to be less than 0.1% by potassium fluoride assay. The solution was seeded with crystals of the title compound at 20-25° C., stirred for 1 hour, and cooled to 0° C. for 2 hours. The resulting solids were filtered, washed with methyl t-butylether (2×200 mL, cooled to −15° C.), and dried under vacuum to yield 256.1 g of the title compound (60.5% from cinnamyl alcohol).
출처 및 근거
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| 특허 번호 | US06376711B1 |
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| 출처 데이터셋 | uspto-grants-2002_04 |
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| ORD ID | ord-589c1ebdf98846b08c56377f5e959b3f |
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| 출처 메모 | uspto-grants-2002_04 |
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