Four optically pure stereoisomers of 2,6-dimethyl-4-2-methyl-3-3-(cyclopropylmethoxy) phenylpropyl-morpholine, a new broad-spectrum morpholine fungicide, were prepared starting from the chiral ...precursor 2-methyl-3-3-(benzyloxy)phenyl-1-propanol. Optically active 2 was obtained by lipase-catalyzed kinetic resolution of (R,S)-2 and by stereoselective bakers' yeast reduction of 2-methyl-3-3-(benzoyloxy)phenylpropenal. The biological activity of the pure stereoisomers has been evaluated in vitro against a variety of fungi and in vivo against Erysiphe graminis on wheat and Helminthosporium teres on barley
Two Theorems on Joint Production Filippini, Carlo; Filippini, Luigi
The Economic journal (London),
06/1982, Letnik:
92, Številka:
366
Journal Article
Recenzirano
Some new results from joint production models represented by linear equations are offered. The necessary and sufficient conditions are derived for the existence of a semi-positive (positive) price ...vector and for a decreasing relation between wage rates and profit. Also explained is the presence of negative labor values and positive prices. The scrap age of a machine is determined as well. The conditions treated are quite similar to those found for efficiency in production. Many of these aspects remain, even without any explicit optimization framework.
