complex in combination with quinaldic acid shows high reactivity and chemoselectivity for the catalytic deprotection of hydroxyl groups protected as allyl ethers. The catalyst operates in alcoholic solvents without the need for any additional nucleophiles, satisfying the practical requirements of operational simplicity, safety, and environmental friendliness. The wide applicability of this deprotection
[CpRu(IV)(π-C3H5)(2-quinolinecarboxylato)]PF6 Complex: A Robust Catalyst for the Cleavage and Formation of Allyl Ethers
作者:Shinji Tanaka、Hajime Saburi、Masato Kitamura
DOI:10.1002/adsc.200505401
日期:2006.2
the quantitative synthesis of [CpRu(IV)(π-C3H5)(2-quinolinecarboxylato)]PF6 from [CpRu(CH3CN)3]PF6, 2-quinolinecarboxylic acid, and 2-propen-1-ol has been established. The cationic Ru(IV) complex is air- and moisture-stable, and can be stored in a vial for at least six months. This complex realizes a simple and easy operation for both the deallylation of allylethers in methanol and the dehydrative
IODIZED AROMATIC CARBOXYLIC ACID TYPE PENDANT-CONTAINING POLYMER, RESIST COMPOSITION AND PATTERNING PROCESS
申请人:Shin-Etsu Chemical Co., Ltd.
公开号:US20210333712A1
公开(公告)日:2021-10-28
An iodized aromatic carboxylic acid type pendant-containing polymer is provided. A resist composition comprising the same offers a high sensitivity and is unsusceptible to nano-bridging, pattern collapse or residue formation, independent of whether it is of positive or negative tone.