Hydrochloric Acid → 2-Phenyl-2-cyclohexen-1-one

HRID 2211148

반응식

HRID 2211148 반응식
[C:1]1([Mg]Br)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[C:9]1([Li])[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=1.C(OC(=O)C)(=[O:18])C.P(Cl)(Cl)(Cl)=O.Cl>N1C=CC=CC=1>[C:1]1([C:10]2[C:9](=[O:18])[CH2:14][CH2:13][CH2:12][CH:11]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1

참가 물질

7

반응물 5

HCID 313Hydrochloric AcidHCID 7918Acetic AnhydrideHCID 24813Phosphorus oxychlorideHCID 178418255HCID 178418255, 화합물HCID 178506676HCID 178506676, 화합물

생성물 1

HCID 12014012-Phenyl-2-cyclohexen-1-one

시약·촉매·용매 1

HCID 1049Pyridine용매

실험 절차

When phenylmagnesium bromide (a) or phenyllithium (b) is used in place of 3-pyridylmagnesium bromide, the phenylcarbinol enol ether 13 arises (Scheme 3). This is refluxed with acetic anhydride (c) or dehydrated with phosphorous oxychloride and pyridine (d) and hydrolyzed with aqueous hydrochloric acid (e) to give 2-phenyl-2-cyclohexenone (14). Reduction of 14 with sodium borohydride and cerium chloride in methanol (f) provides the allylic alcohol 15 which is dehydrated (d) to 2-phenyl-1,3-cyclohexadiene 16. Reaction of 16 with tertiary butyl nitrosoformate (2) as in Scheme 1, provides the Diels-Alder cycloadduct 17, which can be converted in four steps to (±) exo-2-phenyl-7-azabicyclo[2.2.1]heptane (18), the phenyl analog of epibatidine. ##STR6##

출처 및 근거

ORD 기록
ord-1e8e2b522c884cc7b6f929328c7f7da2
출처 데이터셋
uspto-grants-1995_10
특허 번호
US05462956

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