胶状
发表于 2025-3-25 04:59:20
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Forehead-Lift
发表于 2025-3-25 09:33:54
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无孔
发表于 2025-3-25 13:14:00
M. Dalla Chiara,R. Giuntini,R. Greechieles which have potential use as pharmaceutical or agrochemical products or as new materials depend on their absolute configuration. It is thus necessary to develop efficient and economical methods which can be applied to the synthesis of complex molecular systems and meet the following stringent cri
Abrupt
发表于 2025-3-25 16:56:06
M. Dalla Chiara,R. Giuntini,R. Greechiek out the differences between homogeneous and heterogeneous enantioselective catalysis and to show the contributions of homogeneous catalysis to the understanding of a catalyst‘S enantioselectivity..The most celebrated reaction in enantioselective catalysis with transition metal compounds is the hyd
疏忽
发表于 2025-3-25 23:41:56
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Allege
发表于 2025-3-26 03:28:31
Similarities Between Attributesd Stewart . However, it is only in the past 20 years that the subject has been studied in any detail..The requirement of asymmetric activity is the existence of a chiral environment on the catalyst surface and this may be created in one of two ways. First, by supporting the metal on a chiral supp
离开
发表于 2025-3-26 08:19:16
Restricted Geometric Relationshipsalkanones. For the hydrogenation of 3-octanone, fine nickel powder was a better source of the catalyst than Raney nickel. 3-Octanone was hydrogenated with an optical yield of 30% over tartaric acid-NaBr-fine nickel powder. As for the effect of hydrogenation temperature on optical yield, hydrogenatio
Intersect
发表于 2025-3-26 12:00:25
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Arctic
发表于 2025-3-26 16:22:30
Similarities Between Attributesof estrone and estrone-3-methyl ether . The complex catalysts chiral hydrosilane-rhodium-( +)- or (-)-DIOP or (+)- or (-)-BINAP allowed different stereoselectivities in the formation of the 17α- and 17β-alcohols.
缝纫
发表于 2025-3-26 19:44:12
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