Deconstruction as a Strategy for the Design of Libraries of Self-Assembling Dendrons
作者:Brad M. Rosen、Mihai Peterca、Chenghong Huang、Xiangbing Zeng、Goran Ungar、Virgil Percec
DOI:10.1002/anie.201002514
日期:2010.9.17
Bringing down the dendron: The deconstruction of self‐assembling dendrons represents a new strategy for the rational design of libraries of self‐assembling dendrons with unprecedented primary structure (see picture). In this strategy, molecular targets are designed by systematically removing branches from a parent dendron. This approach provides a diversity of molecular topologies unencountered in
Two-Step, One-Pot Ni-Catalyzed Neopentylglycolborylation and Complementary Pd/Ni-Catalyzed Cross-Coupling with Aryl Halides, Mesylates, and Tosylates
作者:Daniela A. Wilson、Christopher J. Wilson、Brad M. Rosen、Virgil Percec
DOI:10.1021/ol801972f
日期:2008.11.6
Two-step, one-pot neopentylglycolborylation of aryl iodides and bromides catalyzed by NiCl2(dppe) and NiCl2(dppp) is reported. Electron-rich and electron-deficient aryl neopentylglycolboronates were efficiently cross-coupled with aryl iodides, bromides, chlorides, mesylates, and tosylates by exploiting complementary Pd/Ni and Ni/Ni catalysis. The borylation route was further extended to a three-step
[EN] PROCESSES FOR THE PREPARATION OF BIPHENYL COMPOUNDS<br/>[FR] PROCÉDÉS POUR LA FABRICATION DE COMPOSÉS BIPHÉNYLES
申请人:UNIV PENNSYLVANIA
公开号:WO2009137322A3
公开(公告)日:2010-01-07
PROCESSES FOR THE PREPARATION OF BIPHENYL COMPOUNDS
申请人:Percec Virgil
公开号:US20110207957A1
公开(公告)日:2011-08-25
The invention concerns processes for the synthesis of a compound of the formula: wherein: R
1
and R
2
are each, independently, C
1
-C
12
alkyl, CO
2
R
3
, OR
4
, R
5
(OR
6
), or C
6
-C
18
aryl; R
3
-R
6
are each, independently, C
1
-C
12
alkyl or C
6
-C
12
aryl; and n and m are each, independently, O or an integer from 1-5; said process comprising: —contacting a compound of the formula H0-R
7
-0H with BH
3
and a compound of the formula in the presence of a nickel-containing catalyst to produce a first product, where R
7
is a C
2
-C
12
hydrocarbon group and X is a halogen, OMs or OTs; —contacting the first product in situ with a compound of the formula: in the presence of a nickel-containing catalyst to produce a compound of formula I, where Z is a halogen.