4-(Hydroxymethyl)benzeneboronic acid → 1-[2-(4-Hydroxymethylphenyl)cyclopenten-1-yl]-4-(methylthio)benzene

HRID 37529

反応式

HRID 37529 の反応式
Br[C:2]1[CH2:6][CH2:5][CH2:4][C:3]=1[C:7]1[CH:12]=[CH:11][C:10]([S:13][CH3:14])=[CH:9][CH:8]=1.[OH:15][CH2:16][C:17]1[CH:22]=[CH:21][C:20](B(O)O)=[CH:19][CH:18]=1>>[OH:15][CH2:16][C:17]1[CH:22]=[CH:21][C:20]([C:2]2[CH2:6][CH2:5][CH2:4][C:3]=2[C:7]2[CH:12]=[CH:11][C:10]([S:13][CH3:14])=[CH:9][CH:8]=2)=[CH:19][CH:18]=1

参加物

3

実験手順

Following the synthetic procedure outlined in Step 3 of Example 1, 250 mg (0.93 mmol) of 1-(2-bromocyclopenten-1yl)-4-(methylthio) benzene (Example 1, Step 2) was reacted with 290 mg (1.9 mmol) of 4-hydroxymethylphenylboronic acid (Step 1). Purification by silica gel chromatography (MPLC) with ethyl acetate/hexane (1:4) gave 255 mg (92%) of 1-[2-(4-hydroxymethylphenyl)cyclopenten-1-yl]-4-(methylthio)benzene as a solid: mp 82°-85° C; NMR (CDCl3) d 2.04 (m, J=7 Hz, 2H), 2.45 (s, 3H), 2.88 (t, J=7 Hz, 4H), 4.64 (s, 2H), 7.08 (s, 4H), (m, 2H), 7.15-7.25 (m, 4H).

後処理

  1. customPurification by silica gel chromatography (MPLC) with ethyl acetate/hexane (1:4)

出典と根拠

ORDレコード
ord-d928f1afcb3d4e73a243dc742f844705
出典データセット
uspto-grants-1995_05
特許番号
US05420287

関連ノート

読み込み中…