Photochemical and Thermal Reaction

Photochemical　and　Thermal　Reaction...     

Enzymatic Promiscuity： Escherichia coli BioH Esterase-catalysed Aldol Reaction and Knoevenagel Reaction

Esterase BioH,which is obligatory for biotin synthesis in Escherichia coli,was found to exhibit a promiscuous ability to catalyse Aldol and Knoevenagel reactions with moderate to good yields.The reaction conditions including organic solvent,molar ratio of ketone to aldehyde,enzyme amount,and reaction time were investigated to evaluate the effect of different reaction conditions on yield.Target compounds were afforded in the best yield of 91.2％ for Aldol reaction and 54.7％ for Knoevenagel reaction.In addition,because the enzyme could be prepared with a low cost,this protocol could provide an economic route to conduct Aldol and Knoevenagel reactions,which expand the field of enzymatic promiscuity.     

Reaction auf Prote?nstoffe

Ohne Zusammenfassung     

Reaction auf Vanadinsäure

Analytical and Bioanalytical Chemistry -     

Reaction auf Code?n

Ohne Zusammenfassung     

Reaction auf Blaus?ure

Ohne Zusammenfassung     

Reaction auf Chroms?ure

Ohne Zusammenfassung     

Reaction auf Cyanurs?ure

Ohne Zusammenfassung     

Die ?Millon'sche Reaction?

Ohne Zusammenfassung     

On the Reaction Path Hamiltonian

A vector-fiber bundle structure of the reaction path Hamiltonian, which has been introduced by Miller, Handy and Adams, is explored with respect to molecular vibrations orthogonal to the reaction path. The symmetry of the fiber bundle is characterized by the real orthogonal group O(3N- 7) for the dynamical system with N atoms. Under the action of group O(3N- 7). the kinetic energy of the reaction path Hamiltonian is left invariant. Furthermore , the invariant behaviour of the Hamiltonian vector fields is investigated.     

Studies on Ester Exchange Reaction

ＳｔｕｄｉｅｓｏｎＥｓｔｅｒＥｘｃｈａｎｇｅＲｅａｃｔｉｏｎＺＨＡＮＧＪｉｎｇ－ｗｅｎ,ＺＨＡＮＧＸｉａｏ－ｌｏｎｇ,ＭＡＸｉｕ－ｌｉ,ＬＩＵＣｈａｎｇ－ｃｈｅｎｇ,ＭＵＹｉｎｇ,ＳＵＮＹｕｎ－ｘｉｕ,ＪＩＡＮＧＷｅｎ－ｐｕ,ＨＵＡＮＧＨｕａ－ｍｉｎ...     

Reaction auf Vanadins?ure

Ohne Zusammenfassung     

Reaction der Chlorsäure

Analytical and Bioanalytical Chemistry -     

Reaction der Chlors?ure

Ohne Zusammenfassung