Diethyl Ether → 2,2-Dimethyl-4-(naphthalen-2-yl)-2H-1-benzopyran-7-ol

HRID 26300

反応式

HRID 26300 の反応式
[CH3:1][Li].[OH:3][C:4]1C=C2[C:7]([C:8]([C:15]3[CH:24]=[CH:23][C:22]4[C:17](=[CH:18][CH:19]=[CH:20][CH:21]=4)[CH:16]=3)=[CH:9]C(=O)O2)=[CH:6][CH:5]=1.[CH3:25][CH2:26][O:27][CH2:28][CH3:29]>>[CH3:25][C:26]1([CH3:1])[CH:9]=[C:8]([C:15]2[CH:24]=[CH:23][C:22]3[C:17](=[CH:18][CH:19]=[CH:20][CH:21]=3)[CH:16]=2)[C:7]2[C:28](=[CH:29][C:4]([OH:3])=[CH:5][CH:6]=2)[O:27]1

参加物

4

反応物 3

HCID 3283Diethyl EtherHCID 205704957-Hydroxy-4-(naphthalen-2-yl)-2H-1-benzopyran-2-oneHCID 178418348HCID 178418348、化合物

生成物 1

HCID 205705402,2-Dimethyl-4-(naphthalen-2-yl)-2H-1-benzopyran-7-ol

実験手順

To a stirred solution of methyl lithium (0.04 mole, 20 ml of a 1.9 M solution in ether) under nitrogen at ambient temperature was added portionwise 7-hydroxy-4-(2-naphthyl)coumarin (2.89 g, 0.01 mole). After 5 hours the solution was decomposed with acid to give 2,2-dimethyl-4-(2-naphthyl)-2H-chromen-7-ol as a crude dark brown foam (2 g) which was used without further purification.

出典と根拠

ORDレコード
ord-2ea28374bfa547abbf9cb25e7de305d7
出典データセット
uspto-grants-1979_04
特許番号
US04148909

関連ノート

読み込み中…