SYNTHETIC METHOD FOR THE PREPARATION OF 1, 2-BENZISOTHIAZOLIN-3-ONE
申请人:Shouguang Syntech Fine Chemical Co., Ltd.
公开号:US20150336910A1
公开(公告)日:2015-11-26
The present invention relates to a method for producing a 1,2-benzisothiazolin-3-one compound (I) by reacting a 2-halobenzonitrile compound (II) with a thiol compound (III) to form an intermediate (IV) and subsequently reacting the intermediate (IV) with a halogenation agent in the presence of water to form a reaction mixture (RM), comprising the 1,2-benzisothiazolin-3-one compound (I) and a halide compound (V).
A disulfone compound represented by the general formula (3):
1
wherein Ar is optionally substituted aryl, Y is hydrogen or oxo, and each wavy line represents either of E/Z geometrical isomers or a mixture thereof; a process for the preparation of the compound; intermediates thereof; and a process for the preparation of a carotenoid represented by the general formula (4):
2
wherein Y and each wavy line are as defined above, comprising reacting a disulfone compound of the general formula (3) with a basic compound.
Dihalo-compound and process for producing vitamin A derivative
申请人:——
公开号:US20010025127A1
公开(公告)日:2001-09-27
There is disclosed a dihalo-compound of formula (1):
1
wherein X
1
and X
2
represent different halogen atoms, R represents a hydrogen atom or a protective group for a hydroxyl group, and a process for producing vitamin A derivative via a sulfone derivative of formula (5):
2
wherein Ar represents an optionally substituted aryl group, and R represents the same as defined above.
NOVEL SULFONE DERIVATIVES AND PROCESS FOR PRODUCING THESE
申请人:SUMITOMO CHEMICAL COMPANY LIMITED
公开号:EP1359143A1
公开(公告)日:2003-11-05
There are provided production processes for cyclic sulfone compounds of formula (2) or (4):
or
wherein the dashed lines represent that a double bond is present at one of three positions indicated; Ar and the wavy line are as defined below, characterized in that compounds of formula (1) or (3):
or
wherein Ar is aryl optionally having a substituent(s) and the wavy line represents either one of E/Z geometrical isomers or their mixture, is subjected to cyclization in the presence of an acid catalyst. These processes are excellent processes as the production processes for retinol from the viewpoints of raw material costs, intermediate purification, the number of steps, and the like.
This invention is directed to the compound of formula (I) which is useful for inhibiting the activity of Factor Xa. The present invention is also directed to compositions containing said compounds, processes for their preparation, their use, such as in inhibiting the formation of thrombin or for therapeutically or prophylactically treating a patient suffering from, or subject to, or associated with a disease state associated with a cardiovascular disorder.