The Construction of a Bioreactor for the Production of an Optically Active Compound

1989 ◽  
pp. 103-112
Author(s):  
Shigeru Kajiwara ◽  
Hidekatsu Maeda
2003 ◽  
Vol 2 (2) ◽  
pp. 147-160 ◽  
Author(s):  
Yoshimi Niwano ◽  
Tetsuto Ohmi ◽  
Akira Seo ◽  
Hiroki Kodama ◽  
Hiroyasu Koga ◽  
...  

2017 ◽  
Vol 96 (5) ◽  
pp. 1221-1227 ◽  
Author(s):  
Leandro G. Aguiar ◽  
Daniel C. Iwakura ◽  
Ana T. S. Semeano ◽  
Rosamaria W. C. Li ◽  
Esmar F. Souza ◽  
...  

1958 ◽  
Vol 11 (1) ◽  
pp. 64 ◽  
Author(s):  
LK Dalton ◽  
JA Lamberton

In cold alcoholic alkali the optically active compound I from Tigaso oil undergoes a rapid reaction which involves loss of its conjugated carbonyl system, and a large change, with inversion, of its optical rotation. The reaction is interpreted as a cyclization and the product is provisionally formulated as a bicyclononane derivative IIa. In hot alcoholic alkali, IIa is not the final product ; the bicyclic compound undergoes further reaction to give a mixture in which the unsaturated monocyclic triketone VII (R=C16H31) appears to predominate, but which probably consists of a mixture of VII and VIII (R=C16H31). These can be hydrogenated to a mixture of saturated monocyclic triketones VII and VIII (R =C16H33). The same hydrogenated triketones are obtained if IIa is first hydrogenated and then heated with alcoholic alkali. These triketones are optically active and by oxidation with hypobromite, or with permanganate and then hypobromite, yield bromoform and the chemically homogeneous tribasic acid IX, which still retains optical activity. The isolation of the saturated hydroxydiketone IIb in 4 per cent, yield from hydrogenated Tigaso oil suggests that 11% is present to that extent in the original oil.


2001 ◽  
Vol 16 (4) ◽  
pp. 463-473 ◽  
Author(s):  
M. Langlet ◽  
C. Coutier ◽  
J. Fick ◽  
M. Audier ◽  
W. Meffre ◽  
...  

2001 ◽  
Vol 73 (7) ◽  
pp. 1137-1145 ◽  
Author(s):  
Fumio Toda

Hexaol host compounds which include guest molecules maximum in 1:6 ratio were prepared. Aromatic hexaol host, hexahydroxytriphenylene, was found to form chiral inclusion crystal by complexation with achiral guest molecules. Some interesting and important optical resolutions of rac-guests by inclusion complexation with a chiral host were described. When chemical reaction and the inclusion complexation procedures in a water suspension medium are combined, new economical and ecological method of the preparation of optically active compound can be established. When photochemical reactions are carried out in an inclusion crystal with a chiral host, enantioselective reactions occur, and optically active product can be obtained. Several successful reactions are described.


1958 ◽  
Vol 11 (4) ◽  
pp. 538
Author(s):  
JA Lamberton

The structure IIIa previously proposed for the β-diketone with an unsaturated side chain, obtained by the action of alkali on the optically active compound of Tigaso oil, is confirmed by the formation of methyl stearyl ketone and resorcinol monomethyl ether in the pyrolysis of the methyl ether (IV). An anomalous lithium aluminium hydride reduction of the methyl ether (IV) and other reactions are discussed. Unsuccessful attempts have been made to synthesize the tribasic acid resulting from sodium hypobromite oxidation of the β-diketone (IIIb).


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