Hydrochloric Acid → HCID 11609154、化合物

HRID 254237ノート

反応式

HRID 254237 の反応式
C[O:2][C:3](=[O:23])[CH2:4][CH2:5][C:6]1([CH3:22])[CH2:15][CH2:14][C:13]2[C:8](=[C:9]3[CH:20]4[CH2:21][CH:17]([CH2:18][CH2:19]4)[C:10]3=[C:11]([OH:16])[CH:12]=2)[O:7]1.[OH-].[Na+].O1CCOCC1.Cl>C(OCC)(=O)C.O>[OH:16][C:11]1[CH:12]=[C:13]2[C:8](=[C:9]3[CH:20]4[CH2:21][CH:17]([CH2:18][CH2:19]4)[C:10]=13)[O:7][C:6]([CH2:5][CH2:4][C:3]([OH:23])=[O:2])([CH3:22])[CH2:15][CH2:14]2

参加物

7

反応物 4

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 312751,4-DioxaneHCID 11716671HCID 11716671、化合物

生成物 1

HCID 11609154HCID 11609154、化合物収率 73.3%

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 8857Ethyl Acetate溶媒

実験手順

1.0 gram (3.16 mmol) of 3-(6-hydroxy-2-methyl-3,4,7,8,9,10-hexahydro-7,10-methano-2H-benzo[h]chromen-2-yl)-propionic acid methyl ester, prepared as described in Example 13, was mixed with 20 mL of 2N NaOH and 20 mL of dioxane, the mixture was stirred for 5 hours and was acidified with dilute HCl. Water and ethyl acetate were added and the organic layer was separated, washed and dried over MgSO4. After the removal of solvents, the residue was further purified by flash column chromatography on silica gel (3:2 ethyl acetate/hexane) to afford 700 mg of 3-(6-hydroxy-2-methyl-3,4,7,8,9,10-hexahydro-7,10-methano-2H-benzo[h]chromen-2-yl)-propionic acid. 1H-NMR (300 MHz, CDCl3) δ (ppm): 6.29 (s, 1H), 4.70 (s, 1H), 3.52-3.46 (d, 2H), 2.69-2.55 (m, 2H), 2.52-2.47 (m, 2H), 2.00-1.64 (m, 8H), 1.43-1.15 (m, 5H); MS: 302 (M+H+, 73%), 325 (M+Na+, 100%)

後処理

  1. customthe organic layer was separated
  2. washwashed
  3. dry with materialdried over MgSO4
  4. customAfter the removal of solvents
  5. customthe residue was further purified by flash column chromatography on silica gel (3:2 ethyl acetate/hexane)

出典と根拠

ORDレコード
ord-ee5f31b4a032497e89d12a8a214ce729
出典データセット
uspto-grants-2011_01
特許番号
US07875607B2

反応ノート

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