A base-free, one-pot diazotization/cross-coupling of anilines with arylboronic acids
作者:Fanyang Mo、Di Qiu、Yubo Jiang、Yan Zhang、Jianbo Wang
DOI:10.1016/j.tetlet.2010.11.099
日期:2011.1
Pd-catalyzed one-pot diazotization/cross-coupling is realized for the synthesis of biaryls directly from anilines and arylboronic acids.
实现了钯催化的一锅重氮化/交叉偶联,可直接从苯胺和芳基硼酸合成联芳基。
1-CYANO-PYRROLIDINE DERIVATIVES AS DUB INHIBITORS
申请人:MISSION THERAPEUTICS LIMITED
公开号:US20200331888A1
公开(公告)日:2020-10-22
The present invention relates to novel compounds and methods for the manufacture of inhibitors of deubiquitylating enzymes (DUBs). In particular, the invention relates to the inhibition of ubiquitin C-terminal hydrolase 30 or ubiquitin specific peptidase 30 (USP30). The novel compounds have formula (I): (Formula (I)) or are pharmaceutically acceptable salts thereof, wherein: R
1a
, R
1b
, R
1c
, R
1d
, R
1e
and R
1f
each independently represent hydrogen, optionally substituted C
1
-C
6
alkyl or optionally substituted C
3
-C
4
cycloalkyl, or R
1b
and R
1c
together form an optionally substituted C
3
-C
6
cycloalkyl ring, or R
1d
and R
1e
together form an optionally substituted C
3
-C
6
cycloalkyl ring; R
2
represents hydrogen or optionally substituted C
1
-C
6
alkyl; A represents an optionally further substituted 5 to 10 membered monocyclic or bicyclic heteroaryl, heterocyclyl or aryl ring; L represents a covalent bond or linker; B represents an optionally substituted 3 to 10 membered monocyclic or bicyclic heterocyclyl, heteroaryl, cycloalkyl or aryl ring; and when -A-L-B is at position x attachment to A is via a carbon ring atom of A, and either: A cannot be triazolopyridazinyl, triazolopyridinyl, imidazotriazinyl, imidazopyrazinyl or pyrrolopyrimidinyl; or B cannot be substituted with phenoxyl; or B cannot be cyclopentyl when L is an oxygen atom.
The invention relates to bimesogenic compounds of formula I
wherein R
11
, R
12
, MG
11
, MG
12
, X
11
, X
12
and Sp
1
have the meaning given in claim
1
, to the use of bimesogenic compounds of formula I in liquid crystal media and particular to flexoelectric liquid crystal devices comprising a liquid crystal medium according to the present invention.
successful synthesis of arylated stibine 3 a in a scale of 34.77 g demonstrates high synthetic potential of this transformation. The formed stibines (R3Sb) were then used for the palladium‐catalyzed carbon–carbon bond forming reaction with aryl boronic acids [R−B(OH)2], giving biaryls with high selectivity, even the structures of two organomoieties (R and R′) are very similar. Plausible catalytic pathways
A focused library of phosphine ligands was constructed for structural optimization. The catalyst can be used to perform the Suzuki–Miyaura cross-coupling reaction of aryl and heteroaryl chlorides.