Sulfuric Acid → 4-(1-Hydroxy-2,6,6-trimethyl-cyclohex-3-en-1-yl)-but-3-yn-2-ol

HRID 1262726노트

반응식

HRID 1262726 반응식
CC([O:6][CH:7]([C:9]#[CH:10])[CH3:8])OCC.C([Mg]Br)C.[CH3:15][CH:16]1[CH:21]=[CH:20][CH2:19][C:18]([CH3:23])([CH3:22])[C:17]1=[O:24].OS(O)(=O)=O.C([O-])([O-])=O.[Na+].[Na+]>C(OCC)C>[OH:24][C:17]1([C:10]#[C:9][CH:7]([OH:6])[CH3:8])[C:18]([CH3:23])([CH3:22])[CH2:19][CH:20]=[CH:21][CH:16]1[CH3:15]

참가 물질

7

반응물 5

HCID 1118Sulfuric AcidHCID 10340Sodium CarbonateHCID 100120033-(1-Ethoxyethoxy)but-1-yneHCID 197996892,6,6-Trimethyl-cyclohex-3-en-1-oneHCID 178418443HCID 178418443, 화합물

생성물 1

HCID 204580054-(1-Hydroxy-2,6,6-trimethyl-cyclohex-3-en-1-yl)-but-3-yn-2-ol

시약·촉매·용매 1

HCID 3283Diethyl Ether용매2회

실험 절차

5.5 g of 2-(3-oxa-pent-2-yloxy)-but-3-yne (see Example 2, letter a), 14 ml of 40% ethyl-magnesium bromide in diethyl ether and 3.5 g of 2,6,6-trimethyl-cyclohex-3-en-1-one in anhydrous diethyl ether were reacted as described in Example 2 (letter b). The crude reaction mixture was then acidified with 35% aqueous H2SO4 and stirred during 2 hours at 20°. After addition of 10% aqueous Na2CO3 until neutrality, extraction with diethyl ether, drying of the organic phase over Na2SO4 and evaporation, there were isolated 0.4 g of crude material. This latter was purified by means of crystallization in cyclohexane, m.p. 101°-104°, to give the desired compound.

후처리

  1. customwere reacted
  2. customThe crude reaction mixture
  3. extractionuntil neutrality, extraction with diethyl ether
  4. dry with materialdrying of the organic phase over Na2SO4 and evaporation
  5. customthere were isolated 0.4 g of crude material
  6. customThis latter was purified by means of crystallization in cyclohexane

출처 및 근거

ORD 기록
ord-d2673c085bb240be9f5bdf2290131b7b
출처 데이터셋
uspto-grants-1984_06
특허 번호
US04453013

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