1,3-Dipolar cycloaddition of imidate ylides on imino-alcohols: Synthesis of new imidazolones using solvent free conditions
作者:Jean Michel Lerestif、Jacques Perrocheau、François Tonnard、Jean Pierre Bazureau、Jack Hamelin
DOI:10.1016/0040-4020(95)00321-x
日期:1995.6
Imidates derived from α-amino esters as potential azomethine ylides, undergo 1,3-dipolar cycloaddition with imino-alcohols, in tautomeric equilibrium with 1,3-oxazolidines, without solvent at 70°C or under microwave irradiation. This reaction leads to a wide range of novel polyfunctionalized 4-yliden-2-imidazolin-5-ones in good yields with short reaction times. The reactivity of these imidates derived
Secondary amine, radical, and alkoxy amine compound
申请人:INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
公开号:US10913812B2
公开(公告)日:2021-02-09
An alkoxy amine compound is provided, which has a chemical structure of:
wherein each of R1 is independently H, C1-6 alkyl group, or C1-6 alkoxy group; R2 is C1-6 alkyl group, R3 is —(CxH2x)—OH or —(CxH2x+1), and x is 1 to 8; R4 is H or C1-6 alkyl group; R5 is
and R6 is H or C1-8 alkyl group; R7 is H or C1-6 alkyl group, R8 is
Ini is a residual group of a radical initiator; and n is an integer of 1 to 10000.
本发明提供了一种烷氧基胺化合物,其化学结构如下:
其中每个 R1 独立地为 H、C1-6 烷基或 C1-6 烷氧基;R2 为 C1-6 烷基,R3 为-(CxH2x)-OH 或-(CxH2x+1),且 x 为 1 至 8;R4 为 H 或 C1-6 烷基;R5 为
R6 是 H 或 C1-8 烷基; R7 是 H 或 C1-6 烷基,R8 是
Ini 是自由基引发剂的残基;n 是 1 到 10000 的整数。
Multicomponent synthesis of dihydrobenzoxazepinones by coupling Ugi and Mitsunobu reactions
作者:Luca Banfi、Andrea Basso Giuseppe Guanti、Paulina Lecinska、Renata Riva
DOI:10.1039/b613056a
日期:——
Various dihydrobenzo[f][1,4]oxazepin-5-ones have been convergently prepared in 2–3 steps by coupling Ugi and Mitsunobu reactions. Two alternative methodologies were used: in the first one the Ugi condensation was followed by a Mitsunobu cyclization (2 steps); in the second one an intermolecular Mitsunobu reaction was followed by a deprotection step and then by an intramolecular Ugi reaction. Also a “convertible” isocyanide was used.
通过 Ugi 和 Mitsunobu 反应的耦合,通过 2-3 步聚合制备了各种二氢苯并[f][1,4]oxazepin-5-ones。使用了两种替代方法:第一种是 Ugi 缩合,然后是 Mitsunobu 环化(2 个步骤);在第二个反应中,先进行分子间 Mitsunobu 反应,然后进行脱保护步骤,然后进行分子内 Ugi 反应。还使用了“可转化的”异氰化物。