Heterocyclic organo-aluminum compounds and their preparation
阅读：744发布：2022-12-20
专利汇可以提供Heterocyclic organo-aluminum compounds and their preparation专利检索，专利查询，专利分析的服务。并且Organoaluminum compounds possessing an alumina-2-oxacyclo-oct-4ene moiety having a vinylic substituent in the seven position are described. These are prepared by reacting an oxacyclopent-3-ene with a nonionic organoaluminum compound possessing an aluminacyclopent-3-ene moiety, preferably in the presence of a stable Lewis Base. The compound possessing the aluminacyclopent3-ene moiety may be used in preformed condition or it may be formed in situ during the course of a one-step reaction. The compounds possessing the 7-vinylic alumina-2-oxacyclooct-4-ene moiety yield novel alkadienols on hydrolysis.，下面是Heterocyclic organo-aluminum compounds and their preparation专利的具体信息内容。
2. A compound according to claim 1 wherein said substituent is a vinyl group.
3. A compound according to claim 1 wherein said substituent is an isopropenyl group.
4. A compound according to claim 1 wherein said substituent is a 1-ethylvinyl group.
5. A compound according to claim 1 wherein said substituent is a 1-(4-methyl-pent-3-enyl)vinyl group.
6. A process of preparing organoaluminum compounds possessing an alumina-2-oxacyclooct-4-ene moiety having a vinylic substituent in the seven position which comprises reacting (i) a nonionic organoaluminum compound possessing an aluminacyclopent-3-ene moiety attached by means of an aluminum-carbon bond to a hydrocarbon group of up to about 18 carbon atoms with (ii) an oxacyclopent-3-ene.
7. The process of claim 6 conducted in the presence of a stable Lewis base.
8. The process of claim 6 conducted in the presence of a tertiary amine, a dialkyl ether, a cycloparaffinic monoether having a six-membered ring, or a cycloparaffinic diether having a five- or six-membered ring.
9. The process of claim 6 conducted in the presence of 1,4-dioxane.
10. The process of claim 6 wherein the oxacyclopent-3-ene is 2, 5-dihydrofuran.
11. The process of claim 6 wherein said nonionic organoaluminum compound is formed in situ.
12. The process of claim 6 wherein said nonionic organoaluminum compound is formed in situ in the presence of a stable Lewis base.
13. A compound according to Claim 1 complexed with a stable Lewis base selected from the group consisting of tertiary amines, dialkyl ethers, cycloparaffinic monoethers having a six-membered ring and cycloparaffinic diethers having a five- or six-membered ring.
14. An organoaluminum compound possessing an alumina-2-oxacyclooct-4-ene moiety having a vinylic substituent in the seven position, the moiety being attached by means of an aluminum-carbon bond to a lower alkyl group.
15. A compound according to claim 14 wherein said substituent is a vinyl group, an isopropenyl group, a 1-ethylvinyl group or a 1-(4-methyl-pent-3-enyl)vinyl group.
16. A compound according to claim 14 complexed with a stable Lewis base selected from the group consisting of tertiary amines, dialkyl ethers, cycloparaffinic monoethers having a six-membered ring and cycloparaffinic diethers having a five- or six-membered ring.
17. A compound according to Claim 14 wherein said substituent is a vinyl group, an isopropenyl group, a 1-ethylvinyl group or a 1-(4-methyl-pent-3-enyl)vinyl group and wherein said compound is complexed with a stable Lewis base selected from the group consisting of tertiary amines, dialkyl ethers, cycloparaffinic ethers having a six-membered ring and cycloparaffinic diethers having a five- or six-membered ring.
18. A compound according to claim 14 complexed with 1,4-dioxane.
19. A compound according to claim 14 wherein said substituent is a vinyl group, an isopropenyl group, a 1-ethylvinyl group or a 1-(4-methyl-pent-3-enyl)vinyl group and said lower alkyl group is an isobutyl group.
20. A process of preparing organoaluminum compounds possessing an alumina-2-oxacyclooct-4-ene moiety having a vinylic substituent in the seven position which comprises reacting an oxacyclopent-3-ene with a nonionic organoaluminum compound possessing an aluminacyclopent-3-ene moiety attached by means of an aluminum-carbon bond to a hydrocarbon group of up to about 18 carbon atoms, the reaction being performed in a stable Lewis base reaction medium at a temperature falling in the range of about 100* to about 175* C. at which excessive cleavage of the Lewis base does not occur, said Lewis base being a tertiary amine, a dialkyl ether, a cycloparaffinic monoether having a six-membered ring, or a cycloparaffinic diether having a five- or six-membered ring.
21. The process of claim 20 wherein said oxacyclopent-3-ene is 2,5-dihydrofuran, said hydrocarbon group is a lower alkyl group and said Lewis base is 1,4-dioxane.
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