Differentiating alkyne reactivity in the post-Ugi transformations: Access to polycyclic indole-fused frameworks
摘要:
The Ugi adducts prepared from propiolic acids, propargylamines, indole-2-carbaldehydes, and isocyanides were utilized to assemble polycyclic indole-fused frameworks via two consecutive carbocyclizations involving triple bonds. First, the peptidyl position of Ugi adduct underwent potassium carbonate-mediated cyclization onto the triple bond derived from propiolic acid. Then, the position 3 of indole core engaged into gold-catalyzed cyclization onto the propargylamine-originated alkyne, completing the construction of polycyclic core. (C) 2018 Elsevier Ltd. All rights reserved.
[EN] SUBSTITUTED BENZIMIDAZOLE CARBOXAMIDES AND THEIR USE IN THE TREATMENT OF MEDICAL DISORDERS<br/>[FR] BENZIMIDAZOLE CARBOXAMIDES SUBSTITUÉS ET LEUR UTILISATION DANS LE TRAITEMENT DE TROUBLES MÉDICAUX
申请人:BIAL BIOTECH INVEST INC
公开号:WO2021055591A1
公开(公告)日:2021-03-25
The invention provides substituted benzimidazole carboxamides and related compounds, compositions containing such compounds, medical kits, and methods for using such compounds and compositions to treat a medical disorder, e.g., cancer, lysosomal storage disorder, neurodegenerative disorder, inflammatory disorder, in a patient.
Benzene-1,3,5-triyl Triformate (TFBen)-Promoted Palladium-Catalyzed Carbonylative Synthesis of 2-Oxo-2,5-dihydropyrroles from Propargyl Amines
作者:Jun Ying、Zhengjie Le、Xiao-Feng Wu
DOI:10.1021/acs.orglett.9b04147
日期:2020.1.3
In this letter, we developed a palladium-catalyzed procedure for the cyclocarbonylation of propargyl amines. Benzene-1,3,5-triyl triformate (TFBen) has been explored as the CO source and also as the key promotor. Various substituted 2-oxo-dihydropyrroles were produced in a facile manner in good yields (up to 90%).
Synthesis of thiazolo[2,3-<i>b</i>]quinazoline derivatives <i>via</i> base-promoted cascade bicyclization of <i>o</i>-alkenylphenyl isothiocyanates with propargylamines
A highly efficient cascade bicyclization reaction of o-alkenylphenyl isothiocyanates with propargylamines has been developed, which affords a series of thiazolo[2,3-b]quinazolines in good to excellent yields by using K2CO3 as a base in MeCN at 80 °C. This method is transition-metal-free and operationally simple with broad functional group tolerance. Mechanistically, 6-exo-trig hydroamination followed
Despite the very low acidity of the inert α C−H bonds (pKa≈42.6), directasymmetric α-C(sp3)−H addition of N-unprotected propargylic amines to trifluoromethyl ketones has been achieved by using a chiral pyridoxal as the carbonyl catalyst, producing a broad variety of chiral alkynyl β-aminoalcohols in high yields with excellent stereoselectivities (up to 84 % yield, >20 : 1 dr, 99 % ee).
尽管惰性 α C−H 键的酸度非常低 (p K a ≈ 42.6),但通过使用手性吡哆醛,已经实现了 N-未保护的炔丙胺与三氟甲基酮的直接不对称 α-C( sp 3 )−H 加成作为羰基催化剂,以高产率和出色的立体选择性(高达 84% 产率,>20:1 dr,99% ee)生产多种手性炔基 β-氨基醇。
Method for producing propargylamine compounds
申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:EP0810199A1
公开(公告)日:1997-12-03
A method for producing a propargylamine compound represented by the general formula (I):
which comprises reacting a propargyl compound represented by the general formula (II):
with an aromatic aldehyde represented by the general formula (III):
ArCHO (III)
and ammonia to obtain an imine compound represented by the general formula (IV):
and hydrolyzing the resultant imine compound. It is to provide a method for producing a propargylamine compound from a propargyl compound by a simple operation without using a special facility, using ammonia as a reaction reagent, without producing a dipropatygylamine compound and a tripropargylamine compound as by-products.