Ab initiostudies of structural features not easily amenable to experiment. 22. Structural aspects of a long-chain hydrocarbon (n-nonane) and a study of the transferability of electronic effects through CC single bonds

1982 ◽  
Vol 3 (2) ◽  
pp. 269-272 ◽  
Author(s):  
J. N. Scarsdale ◽  
H. L. Sellers ◽  
Lothar Schäfer ◽  
Norman L. Allinger
Keyword(s):  
Structural Features ◽  
Electronic Effects ◽  
Single Bonds ◽  
Structural Aspects ◽  
Long Chain ◽  
Chain Hydrocarbon

scholarly journals Phthalocyanine formation using metals in primary alcohols at room temperature

2000 ◽  
Vol 04 (01) ◽  
pp. 103-111 ◽  
Author(s):  
CLIFFORD C. LEZNOFF ◽  
ANNA M. D'ASCANIO ◽  
S. ZEKI YILDIZ
Keyword(s):  
Molecular Weight ◽  
Copper Powder ◽  
Reverse Micelle ◽  
Room Temperature ◽  
Micelle Formation ◽  
Lithium Metal ◽  
Electronic Effects ◽  
Primary Alcohols ◽  
Lower Yield ◽  
Long Chain

Lithium metal added to a solution of 4-neopentoxyphthalonitrile in 1-octanol or other long-chain primary alcohols at room temperature resulted in phthalocyanine formation at a reasonable rate in good yield, while preformed lithium 1-octanolate under the same conditions gave 2,9,16,23-tetraneopentoxyphthalocyanine, but in lower yield at a slower rate. The use of lower-molecular-weight alcohols slowly gave a phthalocyanine in lower yields. Reverse micelle formation when using long-chain alcohols is proposed as a possibility for enhanced phthalocyanine formation at room temperature. 2,9,16,23-Tetrasubstituted phthalocyanines and metallated phthalocyanines were prepared at room temperature from 4-neopentoxyphthalonitrile, 4-bis(4-methoxyphenyl)methoxyphthalonitrile, 4-[1-(4-ethoxy-3-methoxyphenyl)-1-phenyl]methoxyphthalonitrile and phthalonitrile using lithium 1-octanolate in 1-octanol or by the addition, to a solution of the phthalonitrile in ethanol, of calcium turnings or, to a solution of the phthalonitrile in methanol, of magnesium, zinc, iron or copper powder. The tetrasubstituted phthalocyanines produced exhibited a non-statistical distribution of regioisomers, indicating that electronic effects become important in room-temperature cyclotetramerization of phthalonitriles to phthalocyanines.

New Compounds: Fatty Acid and Long Chain Hydrocarbon Derivatives Containing a Strong Chelating Agent

1975 ◽  
Vol 64 (4) ◽  
pp. 704-706 ◽  
Author(s):  
William C. Eckelman ◽  
Stephen M. Karesh ◽  
Richard C. Reba
Keyword(s):  
Fatty Acid ◽  
Chelating Agent ◽  
New Compounds ◽  
Long Chain ◽  
Chain Hydrocarbon

Vapor Pressures of Low-Volatile Esters of 2,4-D

Weed Science ◽  
1968 ◽  
Vol 16 (4) ◽  
pp. 541-544 ◽  
Author(s):  
G. W. Flint ◽  
J. J. Alexander ◽  
O. P. Funderburk
Keyword(s):  
Dichlorophenoxyacetic Acid ◽  
Gas Liquid Chromatography ◽  
Vapor Pressures ◽  
Butyl Ether ◽  
Ether Linkage ◽  
2,4 Dichlorophenoxyacetic Acid ◽  
Hydrocarbon Alcohols ◽  
Long Chain ◽  
Volatile Esters ◽  
Chain Hydrocarbon

The vapor pressures of the four most common commercial low-volatile esters and a reference high-volatile ester of 2,4-dichlorophenoxyacetic acid (2,4-D) were determined by gas-liquid chromatography. The order of increasing volatility and the vapor pressure of these esters in mm of Hg at 187 C are as follows: isooctyl—2.7; 2-ethylhexyl—3.0; butoxy ethanol—3.9; propylene glycol butyl ether—3.9; and the reference, isopropyl—16.7. Extrapolations to 25 C support this ranking at working temperatures. Commercial esters of 2,4-D derived from long-chain hydrocarbon alcohols are in the same volatility range as the commercial esters containing an ether linkage.

scholarly journals The Galleria mellonella Hologenome Supports Microbiota-Independent Metabolism of Long-Chain Hydrocarbon Beeswax

Cell Reports ◽  
2019 ◽  
Vol 26 (9) ◽  
pp. 2451-2464.e5 ◽  
Author(s):  
Hyun Gi Kong ◽  
Hyun Ho Kim ◽  
Joon-hui Chung ◽  
JeHoon Jun ◽  
Soohyun Lee ◽  
...  
Keyword(s):  
Galleria Mellonella ◽  
Long Chain ◽  
Chain Hydrocarbon

Lithiated oxazolinyloxiranes and oxazolinylaziridines: key players in organic synthesis

2014 ◽  
Vol 86 (6) ◽  
pp. 913-924 ◽  
Author(s):  
Saverio Florio ◽  
Leonardo Degennaro ◽  
Rosmara Mansueto ◽  
Biagia Musio ◽  
Filippo M. Perna ◽  
...  
Keyword(s):  
Ab Initio Calculations ◽  
Ab Initio ◽  
Organic Synthesis ◽  
Spectroscopic Data ◽  
Chemical Properties ◽  
Structural Features ◽  
Addition Reactions ◽  
Electronic Effects ◽  
Key Players ◽  
Ir Spectroscopic

AbstractThis paper focuses on α-lithiated oxazolinyloxiranes and oxazolinylaziridines, their generation, reactions, and synthetic applications. The ability of the oxazoline ring in providing stabilization to such α-heterosubstituted carbanions either through electronic effects and coordinative action has been stressed as well as the contribution to the configurational stability or instability of such species. IR spectroscopic data, multinuclear NMR investigations, and ab initio calculations planned to get insights on chemical properties and structural features have been carried out. A number of new reactions including alkylations, addition reactions, hydroxyalkylations, cyclopropanations, lactonizations, and rearrangements have been discovered, giving access to a variety of substances including: aziridinolactones, epoxylactones, aryl alkanones, polysubstituted cyclopropanes, cyclopropanefused lactones, dihydro-oxazoloisoquinolines, diversely functionalized oxazolines, and products that can be derived from them by synthetic elaboration.

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