Dichloromethane → (1R,10R,11S,16S)-1,11,15,15-tetramethyl-3,5-bis(propan-2-yloxy)-8-oxatetracyclo[8.8.0.02,7.011,16]octadeca-2,4,6-triene

HRID 422152노트

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HRID 422152 반응식
[CH3:1][CH:2]([O:4][C:5]1[CH:6]=[C:7]([CH:25]=[C:26]([O:28][CH:29]([CH3:31])[CH3:30])[CH:27]=1)[O:8][CH2:9][C@@H:10]1[C@:19]2([CH3:20])[C@H:14]([C:15]([CH3:22])(C)[CH2:16][CH2:17][CH2:18]2)[CH2:13][CH2:12][C@@:11]1([CH3:24])O)[CH3:3].Cl[Sn](Cl)(Cl)Cl.[CH2:37](Cl)Cl>>[CH3:24][C@@:11]12[CH2:12][CH2:13][C@@H:14]3[C@:15]([CH3:22])([CH2:16][CH2:17][CH2:18][C:19]3([CH3:20])[CH3:37])[C@H:10]1[CH2:9][O:8][C:7]1[C:25]2=[C:26]([O:28][CH:29]([CH3:30])[CH3:31])[CH:27]=[C:5]([O:4][CH:2]([CH3:3])[CH3:1])[CH:6]=1

참가 물질

4

반응물 3

HCID 6344Dichloromethane2회HCID 24287Tin tetrachlorideHCID 58294796(1S,2R,4aS,8aS)-1-[3,5-bis(propan-2-yloxy)phenoxymethyl]-2,5,5,8a-tetramethyl-decahydronaphthalen-2-ol

생성물 1

HCID 53240455(1R,10R,11S,16S)-1,11,15,15-tetramethyl-3,5-bis(propan-2-yloxy)-8-oxatetracyclo[8.8.0.02,7.011,16]octadeca-2,4,6-triene수율 23%

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온도
-78 °C

실험 절차

To a solution of (1S,2R,4aS,8aS)-1-[3,5-bis(propan-2-yloxy)phenoxy-methyl]-2,5,5,8a-tetramethyl-decahydronaphthalen-2-ol (48) (0.90 g, 2.1 mmol) in CH2Cl2 (20 mL), cooled to −78° C., a solution of SnCl4 (0.97 mL, 8.3 mmol) in CH2Cl2 (10 mL) was added dropwise. The temperature was maintained at −78° C. for 4 h, after which the reaction mixture was allowed to warm to room temperature overnight. The reaction was quenched with water (50 mL). The organic layer was separated, dried (Na2SO4) and concentrated. Purification by column chromatography on silica gel (Hexanes/toluene, 1:1) gave (1R,10R,11S,16S)-1,11,15,15-tetramethyl-3,5-bis(propan-2-yloxy)-8-oxatetracyclo[8.8.0.02,7.011,16]octadeca-2,4,6-triene (Compound No. 49) (0.20 g, 23%) as a tan solid. 1H NMR (CDCl3): δ 5.95 (d, 1H), 5.87 (d, 1H), 4.50 (m, 1H), 4.40 (m, 1H), 4.22 (m, 1H), 3.95 (t, 1H), 3.10 (m, 1H) 1.78-1.40 (m, 7H), 1.37 (m, 15H), 1.25-1.00 (m, 4H) 0.92 (s, 3H), 0.87 (s, 3H), 0.82 (s, 3H).

후처리

  1. temperatureto warm to room temperature overnight
  2. customThe reaction was quenched with water (50 mL)
  3. customThe organic layer was separated
  4. dry with materialdried (Na2SO4)
  5. concentrationconcentrated
  6. customPurification by column chromatography on silica gel (Hexanes/toluene, 1:1)

출처 및 근거

ORD 기록
ord-7b3ccf4c9a7a4833b1667f304395cf8f
출처 데이터셋
uspto-grants-2012_01
특허 번호
US08101605B2

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