反応式
[C:1]([C:3]1[CH:14]=[CH:13][C:6]([O:7][C:8]([CH3:12])([CH3:11])[C:9]#[CH:10])=[CH:5][CH:4]=1)#[N:2]>CCN(C1C=CC=CC=1)CC>[CH3:12][C:8]1([CH3:11])[O:7][C:6]2[CH:13]=[CH:14][C:3]([C:1]#[N:2])=[CH:4][C:5]=2[CH:10]=[CH:9]1参加物
3
実験手順
Cyclisation of the 3-(p-cyanophenoxy)-3-methybut-1-yne (9.77 g) was accomplished by heating in diethylaniline at 210°-220° C. under nitrogen. Purification by distillation, and extraction with dilute hydrochloric acid gave 2,2-dimethyl-6-cyano-2H-benzo[b]pyran as a colourless oil (6.84 g), which slowly crystallised on standing, having a nmr spectrum showing signals at δ146, 6.25 (d, J=10), 5.67 (d, J=10), 6.74 (d, J=8), 7.18 (d, J=2), 7.34 (q, J=8,2).
後処理
- customPurification
- distillationby distillation, and extraction with dilute hydrochloric acid
出典と根拠
- ORDレコード
- ord-06eb7d48bcf445648835b26d68e288c3
- 出典データセット
- uspto-grants-1983_07
- 特許番号
- US04391815
関連ノート
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