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Your search keyword '"Methanol -- Physiological aspects"' showing total 7 results
Start Over Descriptor "Methanol -- Physiological aspects" Topic acids -- physiological aspects
7 results on '"Methanol -- Physiological aspects"'

3. Pi-aromatic and sulfur nucleophilic partners in cationic pi-cyclizations: intramolecular amidoalkylation and thioamidoalkylation cyclization via omega-carbinol lactams

Author

Hucher, Nicolas, Decroix, Bernard, and Daich, Adam

Subjects
Chemistry, Organic -- Research, Aromatic compounds -- Physiological aspects, Sulfur -- Physiological aspects, Acids -- Physiological aspects, Atoms -- Research, Ions -- Research, Methanol -- Physiological aspects, Biological sciences, Chemistry
Abstract

Research has been conducted on the ring closure reactions. Results indicate that these reactions proceed via a nicleophilic attack of the electron pi-aromatic or the lone sulfur atom pair onto the endo- or exocyclic N-acyliminium ions generated from the omega-carbinol lactams under acidic conditions.

Published
2001

4. 1-oxaspiro[4.4]nonan-6-ones. Synthetic access via oxonium ion technology, optical resolution, and conversion into enantiopure spirocyclic alpha,beta-butenolides

Author

Paquette, Leo A., Owen, Dafydd R., Bibart, Richard Todd, Seekamp, Christopher K., Kahane, Alexandra L., Lanter, James C., and Corral, Miriam Alvarez

Subjects
Chemistry, Organic -- Research, Oxonium ions -- Physiological aspects, Enantiomers -- Physiological aspects, Cyclic compounds -- Physiological aspects, Butylene -- Physiological aspects, Methanol -- Physiological aspects, Bromine -- Physiological aspects, Acids -- Physiological aspects, Metal ions -- Physiological aspects, Biological sciences, Chemistry
Abstract

Research has been conducted on the enantiomerically pure spirocyclic alpha,beta-butenolides. The synthesis of these butenolides carried out via the acid- or bromonium ion-induced rearrangement of carbinol is described.

Published
2001

5. Synthesis and characterization of coronanes: multicyclopropane-fused macrocyclic arrays

Author

Barrett, Anthony G. M., Hamprecht, Dieter, James, Rachel A., Ohkubo, Mitsuru, Procopiou, Panayiotis A., Toledo, Miguel A., White, Andrew J. P., and Williams, David J.

Subjects
Chemistry, Organic -- Research, Methanol -- Physiological aspects, Acids -- Physiological aspects, Chlorides -- Physiological aspects, Biological sciences, Chemistry
Abstract

The synthesis and characterization of the new coronanes with symmetrical dilactone structure have been carried out. The preparation of these coronanes under high dilution conditions is discussed.

Published
2001

6. Unique charge-separated pyridinium-barbituric acid zwitterions

Author

Jursic, Branko S., Neuman, Donna M., Moore, Zakhia, and Stevens, Edwin D.

Subjects
Chemistry, Organic -- Research, Pyridine -- Physiological aspects, Barbiturates -- Physiological aspects, Acids -- Physiological aspects, Methanol -- Physiological aspects, Biological sciences, Chemistry
Abstract

Research has been conducted on pyridinium barbiturate zwitterions. The preparation of the charge-separated pyridinium barbiturate zwitterions from 1,3-dimethylbarbituric acid and 2-pyridinecarbaldehyde in methanol is described.

Published
2002

7. An oft-studied reaction that may never have been: direct catalytic conversion of methanol or dimethyl ether to hydrocarbons on the solid acids HZSM-5 or HSAPO-34

Author

Song, Weiguo, Marcus, David M., Fu, Hui, Ehresmann, Justin O., and Haw, James F.

Subjects
Chemical research -- Analysis, Chemical reactions -- Analysis, Methanol -- Physiological aspects, Methyl ether -- Physiological aspects, Hydrocarbons -- Physiological aspects, Acids -- Physiological aspects, Solids -- Physiological aspects, Catalysis -- Physiological aspects, Chemistry
Abstract

Research has been conducted on the methanol and dimethylether conversion to hydrocarbons. Results indicate that methanol and dimethylether are not reactive on HZSM-5 or HSAPO-34 catalysts in the absence of the primordial hydrocarbon pool.

Published
2002

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