2018年10月8日 · Addition of an easily oxidized metal like iron (Fe), tin (Sn) or zinc (Zn) in the presence of acid, such as HCl (but often just written, “H+ “) will convert NO 2 to NH 2. Hydrogenation over a palladium, platinum, or nickel catalyst will also convert NO 2 to NH 2 .

In a reduction of nitroarenes using KBH 4 and I 2, BI 3 is generated in situ and was shown to be the active reductant. Conditions were optimized for BI 3 generation and then applied to a wide range of nitroarenes, including traditionally challenging substrates.

2017年12月21日 · The best method for reduction of NO2 to NH2 is to use H2 /Pt in acetic acid. This gives the clean reaction product.Fe in aq.HCl is cheaper but the quality of the product is not so good.

2023年8月18日 · Reduction of the nitro group (−NO 2) to the amino functionality (−NH 2) is one of the most important functional group transformations in organic chemistry. Amino-functionalized aromatics (anilines) are particularly important chemical feedstocks, with a plethora of applications, including in polymers (polyurethanes), dyes, photographic ...

2016年7月21日 · Since chiral amino groups are ubiquitous in a variety of bioactive molecules such as alkaloids, natural products, drugs, and medical agents, the development of reliable catalytic methodologies for the nitro group reduction is attracting an increasing interest also in the preparation of enantiomerically pure amines.

The best reducing agent to convert NO2 group to NH2 group is SnCl2 . However, you need con. HCl during reduction under reflux condition.

2021年4月1日 · Chemical dynamics simulations have been performed to study the NH 2 + NO 2 reaction on singlet potential energy surface at 298 K. To obtain more accurate potential energy surface, seven methods including MP2, B3LYP, OPBE, BhandH, HCTH407, M06 and M06–2X combined with aug-cc-pVDZ basis set were employed to calculate the properties of ...

2023年3月2日 · 这里就以no2变hn2为例，说一说，我遇到的问题，以及试过的反应条件。 1，保险粉 刚进组的时候，硝基转变为氨基，用的是保险粉条件，进行的回流操作。

1,5'-Bis(l,2,4-triazolyls) were obtained in 20–70% yields in the reaction of 1-nitro-3-R-1,2,4-triazoles (R=Cl, Br, NO2) with aqueous solutions of alkali hydroxides and reducing agents (KI, Fe2...

2014年1月11日 · -NO2在Zn，HCl或锌汞齐下被还原为-NH2.