Highly Efficient Visible-Light-Driven [2+2] Cycloaddition of Maleimides to Alkenes and Alkynes for the Synthesis of 3-Azabicyclo[3.2.0]heptane-Fused Scaffolds
作者:Qiang Liu、Jian He
DOI:10.1055/a-1480-3215
日期:2022.2
efficient [2+2] cycloaddition between maleimides and unsaturated moieties, utilizing a visible-light triplet sensitization mode, has been developed for the direct synthesis of multifunctional 3-azabicyclo[3.2.0]heptane derivatives. This reaction relies on selective activation of the maleimide functionality upon energy transfer from a new photosensitizer that outperforms diverse well-established photosensitizers
Photocycloaddition of N-4-alkenyl substituted unsaturated imides
作者:Kevin I. Booker-Milburn、Nicola J. Costin、Richard F. Dainty、Dhiren Patel、Andrew Sharpe
DOI:10.1016/s0040-4039(98)01613-x
日期:1998.10
UV irradiation of a number of N-alkenyl substituted maleimide and tetrahydrophthalimide derivatives leads to the formation of complex 1-azabicyclo[5.3.0]dec-3-enes in excellent yields. (C) 1998 Elsevier Science Ltd. All rights reserved.
NEGATIVE RESIST COMPOSITION AND PATTERN FORMING PROCESS
申请人:Shin-Etsu Chemical Co., Ltd.
公开号:US20220260909A1
公开(公告)日:2022-08-18
A negative resist composition comprising a base polymer comprising repeat units derived from a triple bond-containing maleimide compound is provided. A pattern with a high resolution and reduced edge roughness is formed therefrom.