613-70-7Relevant articles and documents
Total Synthesis of the Ambigols: A Cyanobacterial Class of Polyhalogenated Natural Products
Milzarek, Tobias M.,Gulder, Tobias A. M.
supporting information, p. 102 - 106 (2021/01/09)
The first total synthesis of all members of the cyanobacterial natural product class of the ambigols is described. Key steps of the synthetic strategy are the formation of sterically demanding mono- and bis-iodonium salts to install the required biaryl ether structural elements and Suzuki cross-coupling giving straightforward access to the biaryl bonds. The synthetic methods are also utilized to construct unnatural or hypothetical ambigols that are still awaiting discovery from Nature.
Solvent-free Acetylation Procedure
Bhat, Sujata V.,Gupta, Manisha O.,Yadav, Jyoti K.,Vaze, Kedar R.
, p. 590 - 594 (2021/10/07)
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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.