Photo and thermal reactions of ferrous hydroxide

David Mauzerall; Zofia Borowska; Irene Zielinski

doi:10.1007/bf01581875

Photo and thermal reactions of ferrous hydroxide

Origins of Life and Evolution of Biospheres ◽

10.1007/bf01581875 ◽

1993 ◽

Vol 23 (2) ◽

pp. 105-114 ◽

Cited By ~ 10

Author(s):

David Mauzerall ◽

Zofia Borowska ◽

Irene Zielinski

Keyword(s):

Ferrous Hydroxide ◽

Thermal Reactions

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Oxidation of ferrous hydroxide suspension. III

Journal of Biochemical Toxicology ◽

10.1002/jbt.2570270207 ◽

1977 ◽

Vol 27 (2) ◽

pp. 409-414

Author(s):

Turaga P. Prasad ◽

Vemuri V. Ramasastry

Keyword(s):

Ferrous Hydroxide

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Polarographic studies with the dropping mercury kathode. Part I. The amphoterity of ferrous hydroxide

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19290275 ◽

1929 ◽

Vol 1 ◽

pp. 275-281 ◽

Cited By ~ 5

Author(s):

B. Schrager

Keyword(s):

Ferrous Hydroxide

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THE KINETICS OF THE THERMAL REACTIONS OF ETHYLENE OXIDE

Canadian Journal of Chemistry ◽

10.1139/v63-434 ◽

1963 ◽

Vol 41 (12) ◽

pp. 2956-2961 ◽

Cited By ~ 16

Author(s):

M. Lynne Neufeld ◽

Arthur T. Blades

Keyword(s):

Free Radicals ◽

Free Radical ◽

Ethylene Oxide ◽

Thermal Reactions ◽

Kinetics Of

The thermal reactions of ethylene oxide in the presence of an excess of propylene have been studied as a function of pressure and it has been found that there are two sets of products, acetaldehyde and free radicals, presumably methyl and formyl. These products are believed to arise from an excited acetaldehyde intermediate. Some evidence has been obtained for the occurrence of a surface-catalyzed rearrangement to acetaldehyde but the free radical products are uninfluenced by surface.

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Polymerization of chloroprene. Part 4.—Influence of oxygen on the thermal reactions

Transactions of the Faraday Society ◽

10.1039/tf9706600421 ◽

1970 ◽

Vol 66 (0) ◽

pp. 421-426 ◽

Cited By ~ 2

Author(s):

J. R. Ebdon ◽

R. S. Lehrle ◽

J. C. Robb

Keyword(s):

Thermal Reactions

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The photoaddition of 1,3-diketonatoboron difluorides with benzene derivatives

Canadian Journal of Chemistry ◽

10.1139/v91-064 ◽

1991 ◽

Vol 69 (3) ◽

pp. 423-431 ◽

Cited By ~ 18

Author(s):

Yuan L. Chow ◽

Xinxin Ouyang

Keyword(s):

Crystallographic Analysis ◽

Secondary Oxidation ◽

Enol Ethers ◽

X Ray ◽

Thermal Reactions ◽

Secondary Reactions ◽

Enol Acetates ◽

Orthogonal Orientation ◽

Acid Catalyzed ◽

Boron Difluoride

The boron difluoride complexes of 2-acetylcyclohexanone, 2-acetylcyclopentanone, and acetylacetone (abbreviated as ACHBF2, ACPBF2, and AABF2) were irradiated in the presence of benzene to give the 1:1 adducts as the primary photoadducts; for certain BF2 complexes, toluene, chlorobenzene, benzonitrile, and methyl benzoate were also used as substrates. The 1,5-diketone photoadducts were assumed to form by a [2+2] photocycloaddition followed by cyclobutane opening and hydrolysis to give 1,2 adducts. They undergo a variety of secondary thermal reactions, probably acid catalyzed, to give enol ethers, enol acetates, acetophenones, and ketonylacetophenones. The efficiency of these secondary reactions determines the final products. Photoaddition with a monosubstituted benzene preferentially occurs at the 3,4 bond without regioselectivity. Under oxygen, ACHBF2 photolytically reacts with benzene to give a secondary oxidation product of a 10-membered cyclic alkylphe-none, which is proven by X-ray crystallographic analysis to have the benzene ring and carbonyl group in orthogonal orientation. It is shown that the singlet excited state ACHBF2 initiates the photoaddition, probably through the formation of the benzene exciplex, which could be detected by its emission. While the Stern–Volmer rates are small, the quantum yield of photoaddition products is as high as 0.12–0.19 under limiting conditions. Key words: [2+2] photocycloaddition, non-planar alkanophenone, macrocyclic alkanophenone, boron difluoride complexes, photoaddition to benzenes.

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