Hydroaminocarbonylation of Alkynes to Produce Primary
<i>α</i>
,
<i>β</i>
‐Unsaturated Amides Using NH
<sub>4</sub>
HCO
<sub>3</sub>
Dually as Ammonia Surrogate and Brønsted Acid Additive
作者:Dong‐Liang Wang、Wen‐Di Guo、Qing Zhou、Lei Liu、Yong Lu、Ye Liu
DOI:10.1002/cctc.201800791
日期:2018.10.9
surrogate and Brønsted acid additive, the production of primary α,β‐unsaturated amides via hydroaminocarbonylation of alkynes was accomplished efficiently. The advantages of using the solid and inexpensive NH4HCO3 included: (1) the facile and clean manipulation without presence of stinky gaseous NH3 or liquids organic amines, (2) the inhibition of the subsequent dehydration and hydrolysis of amides due to its
通过同时使用NH 4 HCO 3作为氨代用品和布朗斯台德酸添加剂,可以有效地完成炔烃加氢氨基羰基化生产伯α,β-不饱和酰胺。使用固体廉价的NH 4 HCO 3的优点包括:(1)容易进行清洁的操作,而没有臭味的气态NH 3或液体有机胺的存在;(2)由于其后的酰胺的脱水和水解作用受到抑制弱碱性;(3)释放的H 2 CO 3促进Pd-H催化活性物质的形成用作弱的布朗斯台德酸添加剂。此外,DPPP与天然咬入角(所述diphopshine β Ñ 91)°发现不可缺少刺激用于该反应的钯催化剂的性能。末端和内部的苯乙炔衍生物都可以用作底物,以高收率提供相应的伯α,β-不饱和酰胺,并且对支链的区域选择性极好。