19686-49-8

Upstream product

• 123-62-6 propionic acid anhydride 
• 88-75-5 2-hydroxynitrobenzene 
• 637-27-4 phenyl propionate 
• 802294-64-0 propionic acid 
• 108-95-2 phenol 
• 79-03-8 propionyl chloride 

Downstream Products

• 50916-44-4 1-(4-hydroxy-3-nitrophenyl)propan-1-one 
• 6797-13-3 2-ethyl-1,3-benzoxazole 

Relevant academic research and scientific papers

2-substituted benzoxazole preparation method of compound

The invention relates to a preparing method of 2-substituted benzoxazole compounds. The compounds are obtained by reaction of products obtained by reaction of acyl chloride and o-nitrophenol or derivatives thereof under catalyzing of reducing agent ammonium formate, a solvent and palladium-containing agents. According to the method, the reaction condition is mild, environment is protected, raw materials are rich and easy to obtain, operation is easy, yield is high, and various kinds of performance are optimized.

Heterocyclic imino compounds and fungicides and insecticides for agricultural and horitcultural use

A heterocyclic imino compound of the formula (1) and an agrochemically acceptable salt thereof; and an agricultural chemical, fungicide and insecticide containing at least one member selected from the group of such compounds as an active ingredient: wherein G is or the like, A is a 3- to 13-membered, mono-, di- or tri-cyclic ring which contains at least one hetero atom selected from among oxygen atoms, sulfur atoms and nitrogen atoms, which is composed of from 3 to 13 atoms arbitrarily selected from among carbon atoms, oxygen atoms, sulfur atoms and nitrogen atoms and which may be substituted by from 1 to 13 Ys, provided that when A is a quinolone ring, the nitrogen atom in the quinolone ring is present at the α-position to the imino bond, Z is —OR1 or the like, B is —CH2— or the like, Y is Y′—D—(CH2)p— or the like, D is a single bond or the like, X is halogen or the like, and R1 is a hydrogen atom, C1-C6 alkyl, C1-C6 haloalkyl or the like.

Ozone-mediated Reaction of Anilides and Phenyl Esters with Nitrogen Dioxide: Enhanced Ortho-reactivity and Mechanistic Implications

In the presence of ozone, anilides 1 can be nitrated rapidly with nitrogen dioxide in chloroform at 0 deg C to give a high proportion of ortho-nitro derivatives (ortho:para = 1.2-4.4) in good yields.The phenyl esters 15 can be similarly nitrated on the aromatic ring without significant cleavage of the ester bond, giving a mixture of isomeric nitro derivatives in which the ortho-isomer predominantes (ortho:para = 1.1-1.5).The oridin of the enhanced ortho reactivity is discussed in terms of an electron-transfer process involving the nitrogen trioxide as initial electrophile.