71472-58-7Relevant academic research and scientific papers
METHODS FOR PREPARING BENZOXAZINES
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, (2021/01/23)
A method is provided for preparing a compound / the method comprising carrying out the following reaction: Formula (i); Formula (ii) where: R10 is hydrogen or a hydroxy protecting group; PG is an amine protecting group; and q is 1 where PG is a
METHODS FOR PREPARING BENZOXAZINES
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, (2021/01/23)
A method is provided for preparing a compound ?. The method comprises carrying out the following reaction: (i), (ii), (iii) where: PG represents a protecting group, LG represents a leaving group, and L and L' are independently selected from OH and leaving
METHODS FOR PREPARING COMPOUNDS
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Page/Page column 26-27, (2020/07/14)
A method is provided for preparing a compound d having the formula (D) The method comprises carrying out the following reaction (c) → (d), where the reaction is carried out at a temperature of at least 100 °C and in the presence of a metal catalyst.
Design, synthesis, and bioevaluation of substituted phenyl isoxazole analogues as herbicide safeners
Fu, Ying,Gao, Shuang,Gao, Ying-Chao,Guo, Ke-Liang,Li, Juan-Juan,Wang, Zi-Wei,Ye, Fei,Zhao, Li-Xia
, p. 10550 - 10559 (2020/11/05)
Herbicide safeners enhance herbicide detoxification in crops without affecting target weed sensitivity. To enhance crop tolerance to the toxicity-related stress caused by the herbicide acetochlor (ACT), a new class of substituted phenyl isoxazole derivatives was designed by an intermediate derivatization method as herbicide safeners. Microwave-assisted synthesis was used to prepare the phenyl isoxazole analogues, and all of the structures were confirmed via IR, 1H NMR, 13C NMR, and HRMS. Compound I-1 was further characterized by X-ray diffraction analysis. Bioassay results showed that most of the obtained compounds provided varying degrees of safening against ACT-induced injury by increasing the corn growth recovery, glutathione content, and glutathione S-transferase activity. In particular, compound I-20 showed excellent safener activity against ACT toxicity, comparable to that of the commercial safener benoxacor. Gaussian calculations have been performed and the results indicated that the nucleophilic ability of compound I-20 is higher than that of benoxacor, thus the activity is higher than that of benoxacor. These findings demonstrate that phenyl isoxazole derivatives possess great potential for protective management in cornfields.
METHODS FOR PREPARING FUEL ADDITIVES
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, (2019/07/17)
Methods for preparing an octane-boosting fuel additive having the following formula: are provided. In a first aspect, the method may comprise carrying out the following reaction: (i), (ii) In a second aspect, the method may comprise: (1) preparing the fue
METHODS FOR PREPARING FUEL ADDITIVES
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Page/Page column 27; 28, (2019/07/17)
A method for preparing a substituted fuel additive d is provided. The method comprises carrying out the following reaction: (a) (b) (d), The fuel additive d may be used as an octane-boosting additive in a fuel for a spark- ignition internal combustion eng
METHODS FOR PREPARING FUEL ADDITIVES
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Page/Page column 13-15, (2019/07/17)
A method for preparing a substituted fuel additive d is provided. The method comprises carrying out the following reaction: Each Y is independently selected from halides, and X is selected from -O- or -NR10-.
METHODS FOR PREPARING FUEL ADDITIVES
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Page/Page column 39; 40, (2019/07/17)
A method is provided for preparing a fuel additive having the formula: ( l ) The method comprises carrying out the following reactions: (i) addition of an alkylating agent b to starting material a: (a) to form an intermediate c; and (ii) ring closing intermediate c to form fuel additive e.
METHODS FOR PREPARING FUEL ADDITIVES
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, (2019/07/17)
An optimised method for preparing a fuel additive f is provided. The method comprises carrying out the following reaction: (c, d, e) Starting material c may be prepared using an optimised method which comprises carrying out the following reaction: (a, b, c)
Simple and efficient synthesis of novel N -dichloroacetyl-3,4-dihydro-2 H -1,4-benzoxazines
Fu, Ying,Qu, Li-Hua,Zhang, Shan-Shan,Ye, Fei,Zhao, Li-Xia,Gao, Shuang,Xing, Zhi-Yong
, p. 143 - 146 (2013/01/16)
An easy synthetic route to N -dichloroacetyl- 3,4-dihydro-2 H -1,4-benzoxazine derivatives 3 involves cyclization of 2-aminophenols 1 with 1,2-dibromoethane and subsequent acylation of the resultant 3,4-dihydro- 2 H -1,4-benzoxazine derivatives 2 with dichloroacetyl chloride. All compounds were characterized by IR, 1 H NMR, 13 C NMR, ESI-MS and elemental analysis. The structure of 3a was determined by X-ray crystallographic analysis.
