Taskspecific ionic liquids and onium salts have been used as solublesupports for peptide synthesis. These new supports combine easy monitoring, high loading capacities, large scale preparation, and homogeneous kinetics characteristics while keeping advantages of solid-phase synthesis including easy purification and workup. Careful structural design of these supports allowed for fine tuning of physical
Use of functionalized onium salts as a soluble support for organic synthesis
申请人:Vaultier Michel
公开号:US20070043234A1
公开(公告)日:2007-02-22
The invention relates to the use of a onium salt functionalized by at least one organic function, as a soluble support, in the presence of at least one organic solvent, for organic synthesis of a molecule, in a homogenous phase, by at least one transformation of said organic function. The onium salt enables the synthesized molecule to be released. The onium salt is present in liquid or solid form at room temperature and corresponds to formula A
1
+
, X
1
−
, wherein A
1
+
represents a cation and X
1
−
represents an anion.
Abstract The utilization of the taskspecificoniumsaltsupported substrates in ionic liquids as solvents (i.e., binary taskspecific ionic liquids) for palladium nanoparticle catalyzed Heck cross-coupling reactions is presented. Adequate substrates have been prepared and used leading to expected products in very high yields. Exceptionally high turnover (TON = 940,000, TOF = 208,000) can be achieved
Use of Functionalized Onium Salts for Peptide Synthesis
申请人:Vaultier Michel
公开号:US20100292439A1
公开(公告)日:2010-11-18
A subject of the invention is the use of a salt with a dedicated task of formula (I):
A
+
-L-R—OY, X
−
as soluble support for peptide synthesis, in which:
X
−
represents a functional or non-functional anion,
Y represents either a hydrogen atom, or a —COOR
1
group, R
1
representing in particular an alkyl group comprising 1 to 20 carbon atoms,
A
+
represents a cationic entity,
L represents an arm, in particular an alkyl group of 3 to 20 carbon atoms,
R represents in particular a group of formula —C(R
a
)(R
b
)—, R
a
and R
b
representing independently of one another in particular a hydrogen or an alkyl group, comprising 1 to 20 carbon atoms.