Development of a Rhodium(II)-Catalyzed Chemoselective C(sp<sup>3</sup>)H Oxygenation
作者:Yun Lin、Lei Zhu、Yu Lan、Yu Rao
DOI:10.1002/chem.201502140
日期:2015.10.12
We report the first example of RhII‐catalyzed chemoselective double C(sp3)Hoxygenation, which can directly transform various toluene derivatives into highly valuable aromatic aldehydes with great chemoselectivity and practicality. The critical combination of catalyst Rh(OAc)2, oxidant Selectfluor, and solvents of TFA/TFAA promises the successful delivery of the oxidation with satisfactory yields
2‐Formyl Benzamides from an
<i>N</i>
‐Phthalimidoyl Sulfoximine
作者:Yongliang Tu、Peng Shi、Carsten Bolm
DOI:10.1002/adsc.202200190
日期:2022.4.26
Under mild conditions, an N-phthalimidoyl sulfoximine undergoes aminolysis to provide a wide range of 2-formyl benzamides in good to high yields. An unprecedented variant of McFadyen-Stevensreaction explains the product formation. The applicability of the products as building blocks for nitriles and alkynes has been demonstrated.
The present invention provides an active energy ray-curable composition comprising a highly reactive anionically polymerizable compound and a photobase generator, the composition having excellent storage stability before active energy ray irradiation, and having high photopolymerization reactivity upon active energy ray irradiation.
The present invention relates to an active energy ray-curable composition comprising:
an anionically polymerizable compound represented by formula (1):
wherein EWG represents an electron-withdrawing group, X represents a single bond or an oxygen atom (-O-), R represents an n-valent organic group, and n represents an integer of 1 to 6; when n is an integer of 2 to 6, the respective EWG and the respective X may be the same or different; and when n is 1, EWG and R may be bonded; and
a compound (photobase generator) represented by formula (2) :
wherein ring A represents an aromatic ring that may be substituted or a heteroaromatic ring that may be substituted; R1 and R2 are the same or different and each represents a hydrogen atom or an alkyl group; R1 and R2 may be bonded to each other to form a ring together with an adjacent nitrogen atom; and the ring may be substituted.
本发明提供了一种活性能量射线固化组合物,该组合物包含高活性阴离子可聚合化合物和光碱发生器,该组合物在活性能量射线辐照前具有优异的储存稳定性,在活性能量射线辐照后具有高光聚合反应活性。
本发明涉及一种主动能射线固化组合物,包括
由式(1)表示的阴离子可聚合化合物:
其中,EWG 代表一个抽电子基团,X 代表一个单键或一个氧原子 (-O-),R 代表一个正价有机基团,n 代表 1 至 6 的整数;当 n 为 2 至 6 的整数时,各 EWG 和各 X 可以相同或不同;当 n 为 1 时,EWG 和 R 可以键合;以及
由式(2)代表的化合物(光碱发生器):
其中,环 A 代表可被取代的芳香环或可被取代的杂芳香环;R1 和 R2 相同或不同,各自代表氢原子或烷基;R1 和 R2 可相互键合,与相邻的氮原子一起形成环;环可被取代。
Active energy ray-curable composition
申请人:TOKYO UNIVERSITY OF SCIENCE FOUNDATION
公开号:US11180579B2
公开(公告)日:2021-11-23
An active energy ray-curable composition is disclosed including:
an anionically polymerizable compound represented by (1):
wherein EWG represents an electron-withdrawing group, X represents a single bond or an oxygen atom (—O—), R represents an n-valent organic group, and n represents an integer of 1 to 6; when n is an integer of 2 to 6, the respective EWG and the respective X may be the same or different; and when n is 1, EWG and R may be bonded; and
a compound (photobase generator) represented by (2):
wherein ring A represents an aromatic ring that may be substituted or a heteroaromatic ring that may be substituted; R1 and R2 are the same or different and each represents a hydrogen atom or an alkyl group; R1 and R2 may be bonded to each other to form a ring together with an adjacent nitrogen atom; and the ring may be substituted.
本发明公开了一种活性能量射线固化组合物,包括
由(1)代表的阴离子可聚合化合物:
其中,EWG 代表一个抽电子基团,X 代表一个单键或一个氧原子 (-O-),R 代表一个正价有机基团,n 代表 1 至 6 的整数;当 n 为 2 至 6 的整数时,各自的 EWG 和各自的 X 可以相同或不同;当 n 为 1 时,EWG 和 R 可以键合;以及
由(2)代表的化合物(光化基发生器):
其中,环 A 代表可被取代的芳香环或可被取代的杂芳香环;R1 和 R2 相同或不同,各自代表氢原子或烷基;R1 和 R2 可相互键合,与相邻的氮原子一起形成环;该环可被取代。