• Bulletin of the Korean Chemical Society
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• 제9권2호
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• pp.71-77
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• 1988

Boron trifluoride etherate on alumina catalyses the condensation of orcinol and monomethyl orcinol with cyclic allylic alcohols : in contrast to parallel reactions with boron trifluoride etherate in solution the products obtained undergo intramolecular cyclisations.

• Archives of Pharmacal Research
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• 제15권4호
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• pp.371-373
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• 1992

3, 4, 5, 6, -Tetrahydro-7-hydroxy-2-methyl-9-alkyl-2, 6-methano-2H-1-benzoxocins are readily prepared by baron trifluoride etherate-catalyzed cyclization of resorcinols with cyclic allylic alcohol.

• Bulletin of the Korean Chemical Society
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• 제13권2호
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• pp.117-118
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• 1992

Boron trifluoride etherate on alumina catalyses the condensation 5-(1,1-dimethylheptyl)-resorcinol, monoalkyl-5-(1,1-dimethylheptyl)-resorcinol and 5-(1,1-dimethylheptyl)-resorcinol dimethyl ether with 1-methyl-2-cyclohexen-l-ol. The products obtained was good to excellent yields.

• Archives of Pharmacal Research
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• 제15권1호
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• pp.5-8
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• 1992

5-Alkyl-3-(1-thioxolanyl-cyclohexenyl)-resorcinol derivatives are readily prepared by boron trifluoride-on-alumina-catalyzed formation of 5-alkylresorcinols with 1-thioxolanyl-2-cyclohexenol; their formation depends on the nature of the alkylgroup. The yield is the highest with 5-(1, 1-dimethylheptyl)-resorcinol. The one with 5-pentylresorcinol is higher than 5-methylresorcinol and resorcinol apparently because of steric effects. The yields of the products increases: 3a (10%), 3b (20%) 3c (48%) and 3d (77%).

• Bulletin of the Korean Chemical Society
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• 제18권12호
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• pp.1245-1247
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• 1997

• Bulletin of the Korean Chemical Society
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• 제16권3호
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• pp.293-296
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• 1995

• Bulletin of the Korean Chemical Society
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• 제20권10호
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• pp.1195-1199
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• 1999

2-(2,4,5-Trimethoxyphenyl)-4-methylene-1,3-dioxolane (1b), 2-(2,4,6-trimethoxyphenyl)-4-methylene-1,3-di-oxolane (2b), and 2-(3,4,5-trimethoxyphenyl)-4-methylene-1,3-dioxolane (3b) were prepared and polymerized with boron trifluoride. Boron trifluoride catalyzed reaction proceeded via mainly ring-opening polymerization and cyclization reaction to yield poly(keto ether) and 3(2H)-dihydrofuranone. The yields of polymer and cyclized product exhibited a dependency on the position of the methoxy substituents in the benzene ring of 2-phenyl-4-methylene-1,3-dioxolane derivatives. Electrophilic attack of methylene or oxygen atom on 4-meth-ylene-1,3-dioxolane ring were suggested for the polymerization and cyclization.

• Bulletin of the Korean Chemical Society
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• 제12권6호
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• pp.633-635
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• 1991

3,4,5,6-Tetrahydro-7-hydroxy-2-(1,3-dithian-2-yl)- 9-alkyl-2,6-methano-2H-1-benzoxocin derivatives are readily prepared by boron trifluoride etherate-catalyzed formation of 5-alkylresorcinols with 1-thioxolanyl-2-cyclohexenol. The yieldis the highest with 5-(1,1-dimethylheptyl)resorcinol. The one with 5-pentylresorcinol is higher than with 5-methylresordnol and resorcinol apparently because of steric effects. The yields of the product increase; 3a(7%), 3b(22%), 3c(38%) and 3d(50%).

• Bulletin of the Korean Chemical Society
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• 제5권6호
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• pp.240-244
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• 1984

8-Oxyquinoline dihydroboronite is prepared by mixing equimolar amounts of 8-hydroxyquinoline and borane-dimethyl sulfide complex in tetrahydrofuran at room temperature and its structure is determined by spectroscopic methods. The reagent is shown to be an extremely mild reducing agent and reduces aldehydes, cyclohexanones, and acid chlorides to some extent. The reagent in the presence of 0.1 equiv of boron trifluoride etherate in tetrahydrofuran at room temperature reduces selectively aldehydes in the presence of ketones, while the reagent in the presence of 1 equiv of boron trifluoride etherate rapidly reduces simple aldehydes and ketones but does not reduce carboxylic acids, esters, and amides.

• 대한화학회지
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• 제27권1호
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• pp.73-75
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• 1983