Unified Approach to Imidodiphosphate-Type Brønsted Acids with Tunable Confinement and Acidity
作者:Sebastian A. Schwengers、Chandra Kanta De、Oleg Grossmann、Joyce A. A. Grimm、Natascha R. Sadlowski、Gabriela G. Gerosa、Benjamin List
DOI:10.1021/jacs.1c07067
日期:2021.9.15
confinement, one of which catalyzes the first highly enantioselective (>95:5 er) sulfoxidation of methyl n-propyl sulfide. Furthermore, the methodology delivers a novel, rationally designed super acidic catalyst motif, imidodiphosphorbis(iminosulfonylimino)imidate (IDPii), the extreme reactivity of which exceeds commonly employed super-Brønsted acids, such as trifluoromethanesulfonicacid. The unique reactivity
我们设计并实现了一种高效且操作简单的单烧瓶合成基于亚胺二磷酸盐的布朗斯台德酸。该方法通过六氯双磷鎓盐的连续氯化物取代进行,提供对亚胺二磷酸盐 (IDP)、亚氨基亚胺二磷酸盐 ( i IDP) 和亚胺二磷亚胺酸盐 (IDPi) 的快速访问。这些特殊的酸催化剂具有广泛的酸度范围(在 MeCN 中p K a从~11 到 <2)和易于调节的受限活性位点。我们的方法能够获得以前难以捉摸的具有特别高结构限制的催化剂支架,其中一个催化甲基n的第一个高度对映选择性 (>95:5 er) 磺化-丙基硫醚。此外,该方法提供了一种新颖、合理设计的超酸性催化剂基序,即亚氨基二磷(亚氨基磺酰基亚氨基)亚胺酸酯(IDPii),其极端反应性超过了常用的超布朗斯台德酸,如三氟甲磺酸。一种此类 IDPii 催化剂的独特反应性已在甲硅烷基乙烯酮缩醛与作为亲电烷基化试剂的甲醇的第一次 α-甲基化反应中得到证明。
[EN] CHIRAL IMIDODIPHOSPHATES AND DERIVATIVES THEREOF<br/>[FR] IMIDODIPHOSPHATES CHIRAUX ET DÉRIVÉS ASSOCIÉS
申请人:STUDIENGESELLSCHAFT KOHLE MBH
公开号:WO2013104604A1
公开(公告)日:2013-07-18
The invention relates to chiral imidodiphosphates and derivatives thereof having the general formula I, The compounds are suitable as chiral Brønsted acid catalysts, phase-transfer catalysts, chiral anions for organic salts, metal salts or metal complexes for catalysis.
Nitrated Confined Imidodiphosphates Enable a Catalytic Asymmetric Oxa-Pictet–Spengler Reaction
作者:Sayantani Das、Luping Liu、Yiying Zheng、M. Wasim Alachraf、Walter Thiel、Chandra Kanta De、Benjamin List
DOI:10.1021/jacs.6b06626
日期:2016.8.3
The development of a highlyenantioselective catalytic oxa-Pictet-Spengler reaction has proven a great challenge for chemical synthesis. We now report the first example of such a process, which was realized by utilizing a nitrated confined imidodiphosphoric acid catalyst. Our approach provides substituted isochroman derivatives from both aliphatic and aromatic aldehydes with high yields and excellent
The invention relates to chiral imidodiphosphates and derivatives thereof having the general formula I,
The compounds are suitable as chiral Brønsted acid catalysts, phase-transfer catalysts, chiral anions for organic salts, metal salts or metal complexes for catalysis.
[EN] PROCESS FOR PREPARING DIMERIC PHOSPHAZENE DERIVED BRØNSTED ACIDS<br/>[FR] PROCÉDÉ DE PRÉPARATION D'ACIDES DE BRØNSTED DÉRIVÉS DE PHOSPHAZÈNE DIMÈRE
申请人:STUDIENGESELLSCHAFT KOHLE MBH
公开号:WO2022073803A1
公开(公告)日:2022-04-14
The present invention describes a new synthesis to chiral imidodiphosphoryl compounds, their salts, metal complexes as well as derivatives thereof. Said chiral imidodiphosphoryl compounds can be used as catalysts for Brønsted acid / Brønsted base or Lewis acid / Lewis base mediated transformations.