QUINOLINE-OXAZOLINE COMPOUNDS AND THEIR USE IN OXIDATION SYNTHESIS
申请人:Sigman Matthew Scott
公开号:US20110054176A1
公开(公告)日:2011-03-03
A quinoline-oxazoline compound having the formula:
where one of X
1
and X
2
is N and the other is C and one of R1, R2 and R3 is Z wherein Z is an oxazoline radical having the formula
such that when X
1
is N R2 is Z and R1 is absent, and when X
2
is N either R1 or R3 is Z and R2 is absent. R1 and R3 through R12 are independently H or a pendant moiety which does not interfere with coordination of either N in the quinoline compound with a coordination center. These compounds can be complexed with a suitable coordination center such as catalytically active palladium and can be highly useful in catalytically oxidizing alkenes with high regioselectivity.
Concise Total Synthesis of (−)‐Vermiculine through a Rhodium‐Catalyzed
<i>C</i>
<sub>2</sub>
‐Symmetric Dimerization Strategy
作者:Philip Steib、Bernhard Breit
DOI:10.1002/chem.201900216
日期:2019.3.7
A short and efficientsynthesis of the C2‐symmetric antibiotic (−)‐vermiculine by utilizing an enantioselective catalytic one‐step dimerization methodology as key‐step to construct the core structure is reported. The late‐stage modifications feature a double metathesis homologation followed by a double Wacker‐type oxidation. These key‐steps allowed the synthesis of vermiculine in only seven steps, starting