2,3-Diphenyl-2,3-butanediol → 2,3-Diphenylbuta-1,3-diene

반응식

[C:1]1([C:7](O)([C:9]([C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)(O)[CH3:10])[CH3:8])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.OS([O-])(=O)=O.[K+]>>[C:1]1([C:7]([C:9]([C:12]2[CH:13]=[CH:14][CH:15]=[CH:16][CH:17]=2)=[CH2:10])=[CH2:8])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1

참가 물질

반응물 2

HCID 978862,3-Diphenyl-2,3-butanediol

HCID 516920Potassium bisulfate

생성물 1

HCID 41291332,3-Diphenylbuta-1,3-diene

실험 절차

A mixture of 50 parts of 2,3-diphenyl-2,3-dihydroxybutane and 0.5 part of freshly dehydrated KHSO4 is distilled for 50 minutes at 11 Torr and 200° C. bath temperature. The fraction which is collected within the boiling range of 150°-180° C./11 Torr yields 43.8 parts of crude 2,3-diphenyl-1,3-butadiene. The product is stirred direct with 21.5 parts of acrylic acid and 2 parts of hydroquinone under a nitrogen atmosphere for 3 hours at 130° to 140° C.

후처리

distillationis distilled for 50 minutes at 11 Torr and 200° C. bath temperature
customThe fraction which is collected within the boiling range of 150°-180° C./11 Torr

출처 및 근거

ORD 기록: ord-840dcc35e12d4000ab504599eb86d2fa
출처 데이터셋: uspto-grants-1980_10
DOI: 10.6084/m9.figshare.5104873.v1
특허 번호: US04229207

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