53606-41-0Relevant articles and documents
Preparation method of plant growth regulation compound sodium nitrophenolate
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Paragraph 0025-0087, (2021/08/06)
The invention relates to the field of preparation of agricultural auxiliaries, in particular to a preparation method of plant growth regulation compound sodium nitrophenolate. According to the invention, acetyl chloride is adopted to replace acetic anhydride which is a precursor to serve as a protecting group for hydroxyl acetylation, so that the acquisition difficulty of process raw materials is reduced, and the production cost of 5-nitroguaiacol sodium salt is controlled; and besides, a phase transfer catalyst is applied to the hydrolysis reaction of 5-nitroacetyl guaiacol, so that the hydrolysis of the product can be effectively promoted, the yield of the hydrolysis reaction is greatly improved, and the overall yield of the 5-nitroguaiacol sodium salt is further improved. The prepared 5-nitroguaiacol sodium salt has the advantage of low cost, and as a main effective component of the compound sodium nitrophenolate, the 5-nitroguaiacol sodium salt can improve the market competitiveness of the compound sodium nitrophenolate product, avoid the behavior that the drug effect of the compound sodium nitrophenolate product is reduced due to the fact that the cost of the 5-nitroguaiacol sodium salt is high and the ratio is reduced by bad manufacturers, and make contribution for promoting the benign development of the market.
Total syntheses of (±)-musellarins A-C
Li, Zhilong,Leung, Tsz-Fai,Tong, Rongbiao
supporting information, p. 10990 - 10993 (2014/10/15)
The first, diastereoselective total syntheses of musellarins A-C were achieved concisely with 7.8-9.8% yields in 15-16 steps. The key synthetic features include (i) an Achmatowicz rearrangement, Kishi reduction, and Friedel-Crafts cyclization to construct
