m-Chloroperbenzoic acid → (1R,4R,6S)-4-benzhydryl-3,7-dioxa-bicyclo[4.1.0]-heptane

HRID 1429045

反応式

HRID 1429045 の反応式
[CH:1]([C@H:14]1[CH2:19][CH:18]=[CH:17][CH2:16][O:15]1)([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C1C=C(Cl)C=C(C(OO)=[O:28])C=1>>[CH:1]([C@H:14]1[CH2:19][C@H:18]2[C@H:17]([O:28]2)[CH2:16][O:15]1)([C:8]1[CH:9]=[CH:10][CH:11]=[CH:12][CH:13]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH:1]([C@H:14]1[CH2:19][C@@H:18]2[C@@H:17]([O:28]2)[CH2:16][O:15]1)([C:8]1[CH:9]=[CH:10][CH:11]=[CH:12][CH:13]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

参加物

4

反応物 2

HCID 70297m-Chloroperbenzoic acidHCID 66630729(2R)-2-Benzhydryl-3,6-dihydro-2H-pyran

生成物 2

HCID 86605347(1R,4R,6S)-4-benzhydryl-3,7-dioxa-bicyclo[4.1.0]-heptane収率 52%HCID 86605348(1S,4R,6R)-4-benzhydryl-3,7-dioxa-bicyclo[4.1.0]-heptane収率 41%

実験手順

(2R)-2-benzhydryl-3,6-dihydro-2H-pyran 27b (0.2 g, 0.79 mmol) was reacted with mCPBA (0.27 g, 70%, 1.58 mmol) (Procedure D) to yield the corresponding (1R,4R,6S)-4-benzhydryl-3,7-dioxa-bicyclo[4.1.0]-heptane 28c 0.11 g (52%, [α]D=(+)60.4, c=1, MeOH)) and (1S,4R,6R)-4-benzhydryl-3,7-dioxa-bicyclo[4.1.0]-heptane 28d 0.086 g (41%, [α]D=(+)78, c=1, MeOH). The 1HNMR and 13CNMR were identical for both (1S,4S,6R)-4-benzhydryl-3,7-dioxa-bicyclo[4.1.0]-heptane and (1R,4S,6S)-4-benzhydryl-3,7-dioxa-bicyclo[4.1.0]-heptane.

出典と根拠

ORDレコード
ord-07146e1998ea4af6bd4ee455a69cc5ce
出典データセット
uspto-grants-2015_01
特許番号
US08937189B2

関連ノート

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