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举例 :可输入Filippa Pettersson 或者 Cancer Res. 75(6) , 1102-12, (2015) 或者10.1002/anie.201600521

Tetrahedron letters

Preparation of 2-vinylcyclobutanones and their conversion to cyclopentenones

DA Jackson, M Rey, AS Dreiding

文献索引：Jackson, David A.; Rey, Max; Dreiding, Andre S. Tetrahedron Letters, 1983 , vol. 24, # 44 p. 4817 - 4820

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被引用次数: 22

摘要

Abstract: Methyl-and ethyl-vinylketene 2 were added to several simple olefins 1 to afford alkylated 2-vinylcyclobutanones 4, which in turn rearranged to cyclopentenones 5 (via dienones g, l) or l (via 1, 2-acyl migration) under acid catalysis. Evidence is presented for a cyclopropyl-carbinyl intermediate 8.

巴豆酰氯结构式

亚甲基环戊烷结构式

亚甲基环戊烷

~79%

3-ethenyl-3-methylspiro[3.4]octan-2-one结构式

3-ethenyl-3-met...

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巴豆酰氯结构式

亚甲基环己烷结构式

亚甲基环己烷

~42%

3-ethenyl-3-methylspiro[3.5]nonan-2-one结构式

3-ethenyl-3-met...

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2-Butenoyl chloride, 2-ethyl-, (2E)结构式

2-Butenoyl chlo...

亚甲基环戊烷结构式

亚甲基环戊烷

~67%

3-ethenyl-3-ethylspiro[3.4]octan-2-one结构式

3-ethenyl-3-eth...

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亚甲基环己烷结构式

亚甲基环己烷

~%

3,4-dimethylspiro[4.5]dec-3-en-2-one结构式

3,4-dimethylspi...

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3-ethenyl-3-ethylspiro[3.4]octan-2-one结构式

3-ethenyl-3-eth...

~49%

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(3E)-1-(cyclopent-1-enyl)-3-ethyl-3-penten-2-one结构式

(3E)-1-(cyclope...

3-ethyl-4-methylspiro[4.4]non-3-en-2-one结构式

3-ethyl-4-methy...

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2-methyl-3-pentyl-2-vinylcyclobutanone结构式

2-methyl-3-pent...

~52%

2,3-dimethyl-5-pentylcyclopent-2-en-1-one结构式

2,3-dimethyl-5-...

2,3-dimethyl-4-pentylcyclopent-2-en-1-one结构式

2,3-dimethyl-4-...

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1-庚烯结构式

~%

2,3-dimethyl-4-pentylcyclopent-2-en-1-one结构式

2,3-dimethyl-4-...

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巴豆酰氯结构式

~%

2,3-dimethyl-4-pentylcyclopent-2-en-1-one结构式

2,3-dimethyl-4-...

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2-methyl-3-pentyl-2-vinylcyclobutanone结构式

2-methyl-3-pent...

~11%

2,3-dimethyl-5-pentylcyclopent-2-en-1-one结构式

2,3-dimethyl-5-...

2,3-dimethyl-4-pentylcyclopent-2-en-1-one结构式

2,3-dimethyl-4-...

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1-庚烯结构式

~%

2,3-dimethyl-5-pentylcyclopent-2-en-1-one结构式

2,3-dimethyl-5-...

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3-butyl-2,3-dimethyl-2-vinylcyclobutanone结构式

3-butyl-2,3-dim...

~64%

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未登录结构式

4-butyl-2,3,4-trimethylcyclopent-2-en-1-one结构式

4-butyl-2,3,4-t...

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2-甲基-1-己烯结构式

2-甲基-1-己烯

~%

4-butyl-2,3,4-trimethylcyclopent-2-en-1-one结构式

4-butyl-2,3,4-t...

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3-ethenyl-3-methylspiro[3.4]octan-2-one结构式

3-ethenyl-3-met...

~71%

未登录结构式

未登录结构式

3,4-dimethylspiro[4.4]non-3-en-2-one结构式

3,4-dimethylspi...

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巴豆酰氯结构式

~%

3,4-dimethylspiro[4.5]dec-3-en-2-one结构式

3,4-dimethylspi...

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2??Vinylcyclobutanones by Cycloaddition of Vinylketenes to S...

[Jackson, David A.; Rey, Max; Dreiding, Andre S. Helvetica Chimica Acta, 1983 , vol. 66, # 7 p. 2330 - 2341]

2??Vinylcyclobutanones by Cycloaddition of Vinylketenes to S...

[Jackson, David A.; Rey, Max; Dreiding, Andre S. Helvetica Chimica Acta, 1983 , vol. 66, # 7 p. 2330 - 2341]