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Researches on acetylenesBhattacharjee, Dipali January 1968 (has links)
No description available.
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Reaction of (trialkylstannyl) copper reagents with acetylenic compoundsChong, John Michael January 1983 (has links)
The reaction of a number of (trialkylstannyl)copper reagents with 2-alkynoates, N,N-dimethyl-2-alkynaraides and 1-alkynes is described. It has been found that the (trimethylstannyl)copper reagents 14 and 43-46 efficiently transfer the trimethylstannyl group to oc-alkynoates. Reagent 14 (THF, -48°C) provided predominantly the (Z)-3-trimethyl-stannyl-2-alkenoate (22), reagents 44 and 45 (THF, -48°C) afforded essentially exclusively the corresponding (E) isomer 21, while reagents 43 and 46 gave a mixture of isomers.
Using the above methodology, ethyl 2-pentynoate was converted into either (Z)- or (E)-3-( tri-n-butylstannyl)-2-pentenoate. The (E) isomer was converted into the vinylstannane 188 which was transformed (MeLi, THF, -20°C) into the corresponding stereochemically homogeneous vinyllithium reagent and elaborated into the acyl portion of (±)-triophamine (172), a diacylguanidine recently isolated from Triopha catalinae.
Reaction of 2-alkynoates with excess 44 or 45 (THF, 0°C) afforded, as essentially the only products, (E)-2,3-bis(trimethyl-stannyl)-2-alkenoates (115). One member of this new class of compounds, ester 114 (=115, R = Me, R' = Et) was selectively transmetalated (MeLi, THF, -98°C) and the resultant nucleophilic species was allowed to react with a number of reactive electrophiles to produce esters of general structure 141. / Science, Faculty of / Chemistry, Department of / Graduate
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Syntheses and reactions of acetylenic sugar derivatives /Tsai, Ji-Hsiung January 1975 (has links)
No description available.
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Infrared spectra and hydrogen bonding of acetylenesKraihanzel, Charles Stephen, January 1962 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1962. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
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A study of stereo-electronic factors in the addition of dimethyl acetylene dicarboxylate to substituted 1H- and 3H-indoles /Wai, Sui-man, John. January 1984 (has links)
Thesis (M. Phil.)--University of Hong Kong, 1984. / Caption title.
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A study of stereo-electronic factors in the addition of dimethyl acetylene dicarboxylate to substituted 1H- and 3H-indoles衛小文, Wai, Sui-man, John. January 1984 (has links)
published_or_final_version / Chemistry / Master / Master of Philosophy
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Studies in organo-transition metal chemistry /Liddell, Michael John. January 1989 (has links) (PDF)
Thesis (Ph. D.)--Dept. of Physical and Inorganic Chemistry, University of Adelaide, 1989. / Typescript (Photocopy). Includes bibliographical references.
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Thermal and photochemical reactions of acetylenes I-ortho-effect in the Bergman cyclization of benzannelated enediynes ; II-photocycloaddition of diaryl acetylenes to cyclic dienes mechanisms and applications /Zeidan, Tarek A. Alabugin, Igor V. January 2005 (has links)
Thesis (Ph. D.)--Florida State University, 2005. / Advisor: Igor V. Alabugin, Florida State University, College of Arts and Sciences, Dept. of Chemistry and Biochemistry. Title and description from dissertation home page (viewed Jan. 25, 2006). Document formatted into pages; contains xvi, 346 pages. Includes bibliographical references.
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Syntheses, characterizations and applications of new materials containing polyynes /Lee, Liang-hui, January 2000 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2000. / Vita. Includes bibliographical references. Available also in a digital version from Dissertation Abstracts.
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Regioselectivity of sulfur-substituted acetylenes and nitro olefins in the Diels-Alder reaction, Part I Part II, Synthesis of macrocyclic polydentate ligands; successive Michael addition to activated acetylenesColvin, Howard Allen 08 1900 (has links)
No description available.
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