Two novel N-dichloroacetyl oxazolidines were synthesized with a simple, mild and convenient method in good yields. The compounds were Characterized by IR, 1^H NMR and elemental analysis. The preliminary biological tes...Two novel N-dichloroacetyl oxazolidines were synthesized with a simple, mild and convenient method in good yields. The compounds were Characterized by IR, 1^H NMR and elemental analysis. The preliminary biological test show that the compounds protected maize against injure by chlorsulfuron to some extent.展开更多
Two N-dichloroacetyl oxazolidines were synthesized with a simple, mild and convenient method. All the compounds were characterized by IR, HNMR and elemental analysis. The 1 preliminary biological test showed that the ...Two N-dichloroacetyl oxazolidines were synthesized with a simple, mild and convenient method. All the compounds were characterized by IR, HNMR and elemental analysis. The 1 preliminary biological test showed that the compounds protected maize against injury by some herbicides to some extent.展开更多
After purging air through the mixture of aldehydes and amino alcohols and microwaved the reaction mixture at 50°C for minutes gave the corresponding oxazinanes, and oxazolidines in excellent yields.
The title compound was synthesized and characterized by IR, ^1HNMR and elemental analysis. The preliminary biological test showed that the compound protected maize against injury by imazethapyr to some extent.
To investigate the recovery of amino alcohols as chiral auxiliaries, optically active p-benzyloxyphenylglycinol and its corresponding oxazolidine of 1-naphthylcarboxaldehyde were prepared. Grignard additions to the ox...To investigate the recovery of amino alcohols as chiral auxiliaries, optically active p-benzyloxyphenylglycinol and its corresponding oxazolidine of 1-naphthylcarboxaldehyde were prepared. Grignard additions to the oxazolidine followed by electrophilic quench and acidic hydrolysis afforded an aldehyde(compound 8)(later it was reduced to an alcohol, compound 9) in an excellent enantiomeric excess and a good recovery of the chiral amino alcohol. This research provides a model study of chiral amino alcohols in solid phase asymmetric synthesis.展开更多
A series of novel N-dichloroacetyl oxazolidine herbicide safeners was synthesized and characterized by IR, 1H NMR, 13C NMR, elemental analysis and X-ray diffraction. The preliminary biological test shows that the comp...A series of novel N-dichloroacetyl oxazolidine herbicide safeners was synthesized and characterized by IR, 1H NMR, 13C NMR, elemental analysis and X-ray diffraction. The preliminary biological test shows that the compounds could protect maize against injury caused by chlorsulfuron to a certain extent.展开更多
基金the National Natural Science Foundation of China(No.30171069)the Ministry of Education Foundation of Key Laboratory of Soybean BiologyInnovative Plan from Backbone of General Universities'Teachers in Heilongjiang Province for financial support for this work.
文摘Two novel N-dichloroacetyl oxazolidines were synthesized with a simple, mild and convenient method in good yields. The compounds were Characterized by IR, 1^H NMR and elemental analysis. The preliminary biological test show that the compounds protected maize against injure by chlorsulfuron to some extent.
文摘Two N-dichloroacetyl oxazolidines were synthesized with a simple, mild and convenient method. All the compounds were characterized by IR, HNMR and elemental analysis. The 1 preliminary biological test showed that the compounds protected maize against injury by some herbicides to some extent.
文摘After purging air through the mixture of aldehydes and amino alcohols and microwaved the reaction mixture at 50°C for minutes gave the corresponding oxazinanes, and oxazolidines in excellent yields.
基金Supported by National Basic Research Program of China (30171069)The Natural Science Foundation of Heilongjiang Province (B200602)The Re-search Science Foundation in Technology Innovation of Harbin (2006RFXXN005)
文摘The title compound was synthesized and characterized by IR, ^1HNMR and elemental analysis. The preliminary biological test showed that the compound protected maize against injury by imazethapyr to some extent.
文摘To investigate the recovery of amino alcohols as chiral auxiliaries, optically active p-benzyloxyphenylglycinol and its corresponding oxazolidine of 1-naphthylcarboxaldehyde were prepared. Grignard additions to the oxazolidine followed by electrophilic quench and acidic hydrolysis afforded an aldehyde(compound 8)(later it was reduced to an alcohol, compound 9) in an excellent enantiomeric excess and a good recovery of the chiral amino alcohol. This research provides a model study of chiral amino alcohols in solid phase asymmetric synthesis.
基金the Natural Science Foundation of Heilongjiang Province, China(No.B200602)the Research Science Founda-tion in Technology Innovation of Harbin City, China(No.2006RFXXN005)the Science and Technology Research Project of Heilongjiang Education Department(No.11521038).
文摘A series of novel N-dichloroacetyl oxazolidine herbicide safeners was synthesized and characterized by IR, 1H NMR, 13C NMR, elemental analysis and X-ray diffraction. The preliminary biological test shows that the compounds could protect maize against injury caused by chlorsulfuron to a certain extent.
