81008-52-8Relevant articles and documents
Synthesis method of 6-ethylthio-3-hepten-2-one
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Paragraph 0033-0036, (2021/10/27)
The invention discloses a synthesis method of 6-ethylthio-3-hepten-2-one, which comprises the following steps: taking acetone and 3-ethylthiobutyraldehyde as raw materials, and carrying out one-step reaction in the presence of a catalyst to obtain the 6-ethylthio-3-hepten-2-one, wherein the catalyst is a nitrogen-containing alkali catalyst. The target product can be obtained through one-pot one-step reaction, operation is simple, the catalyst can be recycled, other byproducts cannot be generated, and the method is environmentally friendly, low in cost and high in economic value and is an ideal route.
Method for synthesizing cyclohexenone herbicide key intermediate
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Paragraph 0066; 0067; 0068; 0069; 0070; 0071, (2017/10/07)
The invention provides a method for synthesizing a cyclohexenone herbicide key intermediate which is 6-ethylsuleenyl-3-heptylene-2-ketone. The method for preparing 6-ethylsuleenyl-3-heptylene-2-ketone comprises the following steps: (1) carrying out aldol condensation via crotonaldehyde and acetone under catalysis of alkali to synthesize a compound which is 3,5-heptadiene-2-ketone of formula (I), wherein the reaction route is expressed as a formula which is as shown in the description; and (2) carrying out nucleophilic addition via 3,5-heptadiene-2-ketone and ethanethiol to prepare the cyclohexenone herbicide key intermediate which is 6-ethylsuleenyl-3-heptylene-2-ketone, wherein the reaction route is expressed as a formula which is as shown in the description. The 6-ethylsuleenyl-3-heptylene-2-ketone prepared by the method is high in yield and high in purity; the method is simple in process, cheap and easily available in raw materials, low in production cost and low in environment pollution, and is suitable for large-scale production.
NOVEL HERBICIDES
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Page/Page column 39, (2008/12/07)
Cyclohexanedione compounds, and derivatives thereof, which are substituted in 5-position, are suitable for use as herbicides.