Production method of 2-amino-5-chlorobenzophenone
A technology of chlorobenzophenone and amino group, applied in the field of producing 2-amino-5-chlorobenzophenone, can solve the problems of low purity and the like, and achieve the effect of high purity of finished products
Inactive Publication Date: 2017-02-08
枣阳凤泽环化科技有限公司
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[0003] The technical problem to be solved by the embodiments of the present invention is to propose a method for producing 2-amino-5-chlorobenzophenone in view of the low purity of existing 2-amino-5-chlorobenzophenone products. method
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[0009] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0010] See figure 1 , figure 1 is a flowchart of the method for producing 2-amino-5-chlorobenzophenone according to the first embodiment of the present invention. In this embodiment, the method for producing 2-amino-5-chlorobenzophenone comprises:
[0011] In step S11, 150 parts by weight of 3-5-chlorophenylisoxazole, 300 parts by weight of toluene, 75 parts by weight of iron powder, and 120 parts by weight of hydrochloric acid were successively put into the...
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The invention discloses a production method of 2-amino-5-chlorobenzophenone. The production method comprises the following steps: sequentially adding 150 parts by weight of 3-5-chlorophenylisoxazole, 30 parts by weight of toluene, 75 parts by weight of iron powder, and 120 parts of hydrochloric acid into a reactor; heating until reflux starts, starting timing and temperature maintenance, after 3 hours of temperature maintenance, allowing the reactor to stand still for 10 minutes, then carrying out water diversion; filtering until the temperature of a crystallization kettle is reduced to 10 DEG C, carrying out centrifugation to obtain a coarse product; mixing the obtained coarse product with 5 parts by weight of active carbon and 300 parts by weight of ethanol, heating, carrying out reflux reactions for 30 minutes, filtering until the temperature of crystallization kettle is reduced to 20 DEG C, and carrying out centrifugation to obtain a finished product. The provided method has the advantage that active carbon and ethanol are used to purify the product, and thus the purity of finished product is high.
Description
technical field [0001] The invention relates to a method for producing chemical substances, in particular to a method for producing 2-amino-5-chlorobenzophenone. Background technique [0002] In the prior art, because the application of 2-amino-5-chlorobenzophenone is relatively narrow, there are few companies or research institutes that develop and produce this chemical. Therefore, the purity of the finished product of the existing 2-amino-5-chlorobenzophenone is relatively low, generally use 3-5-chlorophenylisoxazole, toluene, iron powder, hydrochloric acid to react and then filter and centrifuge to obtain the finished product. Contents of the invention [0003] The technical problem to be solved by the embodiments of the present invention is to propose a method for producing 2-amino-5-chlorobenzophenone in view of the low purity of existing 2-amino-5-chlorobenzophenone products. method. [0004] In order to solve the above technical problems, the embodiment of the pre...
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Login to View More IPC IPC(8): C07C221/00C07C225/22
CPCC07C221/00C07C225/22
Inventor 陈金勇
Owner 枣阳凤泽环化科技有限公司