Dimethyl Sulfoxide → (2S,3S,4S,5R,6S)-3,4,5-tribenzyloxy-6-[4-chloro-3-[[4-(2,2,2-trifluoroethoxy)phenyl]methyl]phenyl]-6-methoxy-tetrahydropyran-2-carbaldehyde

HRID 1913052ノート

反応式

HRID 1913052 の反応式
C(Cl)(=O)C(Cl)=O.CS(C)=O.[CH2:11]([O:18][C@H:19]1[C@H:24]([O:25][CH2:26][C:27]2[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=2)[C@@H:23]([O:33][CH2:34][C:35]2[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=2)[C@@:22]([C:43]2[CH:48]=[CH:47][C:46]([Cl:49])=[C:45]([CH2:50][C:51]3[CH:56]=[CH:55][C:54]([O:57][CH2:58][C:59]([F:62])([F:61])[F:60])=[CH:53][CH:52]=3)[CH:44]=2)([O:41][CH3:42])[O:21][C@@H:20]1[CH2:63][OH:64])[C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1.C(N(CC)CC)C>ClCCl>[CH2:11]([O:18][C@H:19]1[C@H:24]([O:25][CH2:26][C:27]2[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=2)[C@@H:23]([O:33][CH2:34][C:35]2[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=2)[C@@:22]([C:43]2[CH:48]=[CH:47][C:46]([Cl:49])=[C:45]([CH2:50][C:51]3[CH:52]=[CH:53][C:54]([O:57][CH2:58][C:59]([F:61])([F:62])[F:60])=[CH:55][CH:56]=3)[CH:44]=2)([O:41][CH3:42])[O:21][C@@H:20]1[CH:63]=[O:64])[C:12]1[CH:13]=[CH:14][CH:15]=[CH:16][CH:17]=1

参加物

6

反応物 4

HCID 679Dimethyl SulfoxideHCID 8471TriethylamineHCID 65578Oxalyl chlorideHCID 68015082[(2R,3R,4S,5R,6S)-3,4,5-tribenzyloxy-6-[4-chloro-3-[[4-(2,2,2-trifluoroethoxy)phenyl]methyl]phenyl]-6-methoxy-tetrahydropyran-2-yl]methanol

生成物 1

HCID 86685150(2S,3S,4S,5R,6S)-3,4,5-tribenzyloxy-6-[4-chloro-3-[[4-(2,2,2-trifluoroethoxy)phenyl]methyl]phenyl]-6-methoxy-tetrahydropyran-2-carbaldehyde収率 96.7%

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒3 回

反応条件

温度
-78 °C

実験手順

Oxalyl chloride (0.16 mL, 1.87 mmol) was dissolved in 5 mL dichloromethane and cooled to −78° C., followed by dropwise addition of dimethyl sulfoxide (0.2 mL, 2.88 mmol) in dichloromethane (3 mL). The reaction mixture was stirred for 15 minutes, before 10 mL solution of [(2R,3R,4S,5R,6S)-3,4,5-tribenzyloxy-6-[4-chloro-3-[[4-(2,2,2-trifluoroethoxy)phenyl]methyl]phenyl]-6-methoxy-tetrahydropyran-2-yl]methanol 7h (1.10 g, 1.44 mmol) in dichloromethane were added and stirred for 40 minutes. Then the reaction mixture was warmed and stirred for 3 hours at room temperature after triethylamine (1.0 mL, 7.21 mmol) was dropwise added. Thereafter, the reaction mixture was partitioned after 5 mL 1 M hydrochloric acid were added, the aqueous phase was extracted with ethyl acetate (10 mL×2) and the organic extracts were combined, dried over anhydrous magnesium sulfate, and filtered. The filtrate was concentrated under reduced pressure to obtain the title compound (2S,3S,4S,5R,6S)-3,4,5-tribenzyloxy-6-[4-chloro-3-[[4-(2,2,2-trifluoroethoxy)phenyl]methyl]phenyl]-6-methoxy-tetrahydropyran-2-carbaldehyde 7i (1.06 g, yellow grease), which was used directly in the next step without purification.

後処理

  1. additionwere added
  2. temperatureThen the reaction mixture was warmed
  3. additionwas dropwise added
  4. customThereafter, the reaction mixture was partitioned after 5 mL 1 M hydrochloric acid
  5. additionwere added
  6. extractionthe aqueous phase was extracted with ethyl acetate (10 mL×2)
  7. dry with materialdried over anhydrous magnesium sulfate
  8. filtrationfiltered
  9. concentrationThe filtrate was concentrated under reduced pressure

出典と根拠

ORDレコード
ord-5633a965df7848c1965c468db918c3fc
出典データセット
uspto-grants-2013_12
特許番号
US08609622B2

反応ノート

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