已经通过钴 (II) 基金属基催化对 N-双同炔氨磺酰基叠氮化物证明了炔丙 C(sp 3 ) H 键的高度化学选择性分子内胺化。在 D 2h对称酰胺卟啉配体 3,5-Di t Bu-IbuPhyrin 的支持下,钴 (II) 催化的 C H 胺化在中性和非氧化条件下有效进行,无需任何添加剂,并生成 N 2作为唯一的副产品。金属自由基胺化适用于二级和三级炔丙C H 底物具有异常高的官能团耐受性,从而为功能化炔丙胺衍生物的高产合成提供了一种直接方法。
已经通过钴 (II) 基金属基催化对 N-双同炔氨磺酰基叠氮化物证明了炔丙 C(sp 3 ) H 键的高度化学选择性分子内胺化。在 D 2h对称酰胺卟啉配体 3,5-Di t Bu-IbuPhyrin 的支持下,钴 (II) 催化的 C H 胺化在中性和非氧化条件下有效进行,无需任何添加剂,并生成 N 2作为唯一的副产品。金属自由基胺化适用于二级和三级炔丙C H 底物具有异常高的官能团耐受性,从而为功能化炔丙胺衍生物的高产合成提供了一种直接方法。
Highly Efficient and Regioselective Platinum(II)-Catalyzed Tandem Synthesis of Multiply Substituted Indolines and Tetrahydroquinolines
作者:Xin-Yuan Liu、Chi-Ming Che
DOI:10.1002/anie.200805383
日期:2009.3.16
special advantage: The platinum(II)‐catalyzed tandemcyclization of aminoalkynes with 1,3‐diketones offers a new and highly efficient method for the synthesis of indolines and tetrahydroquinolines (see scheme; M.S.=molecular sieves). This transformation affords good to excellent product yields with high regio‐ and chemoselectivity under mild reactionconditions.
一个特殊的优势:带有1,3-二酮的铂(Ⅱ)催化的氨基炔的串联环化为合成二氢吲哚和四氢喹啉提供了一种高效的新方法(见方案; MS =分子筛)。在温和的反应条件下,这种转化可提供良好的产品收率,具有很高的区域选择性和化学选择性。
Catalytic One-Pot Synthesis of Cyclic Amidines by Virtue of Tandem Reactions Involving Intramolecular Hydroamination under Mild Conditions
作者:Sukbok Chang、Minjae Lee、Doo Young Jung、Eun Jeong Yoo、Seung Hwan Cho、Sun Kyu Han
DOI:10.1021/ja064788i
日期:2006.9.1
A newsynthetic methodology for the generation of cyclic amidines has been developed by the reaction of 1,n-aminoalkynes with electron-deficient azides using a ruthenium catalyst at ambient temperature. The reaction proceeds most likely via a tandem sequence of intramolecular hydroamination of aminoalkynes, cycloaddition of azides with the resulting enamines, and rearrangement of triazoline intermediates
PtCl<sub>2</sub>-Catalyzed Cycloisomerization of 1,8-Enynes: Synthesis of Tetrahydropyridine Species
作者:Anvar Mirzaei、Xiao-Shui Peng、Henry N. C. Wong
DOI:10.1021/acs.orglett.9b01250
日期:2019.5.17
heterocycle species via 6-endo-dig cyclization and [3,3]-sigmatropic rearrangement in acceptable to good yields. The related control experiments and preliminary mechanistic studies indicate a plausible mechanism involving 1,6-endo-dig aminoplatination of the alkyne and allylic [3,3]-sigmatropic rearrangement with total inversion of the allylic moiety.