Rh<sub>2</sub>(esp)<sub>2</sub>: An Efficient Catalyst for O-H Insertion Reactions of Carboxylic Acids into Acceptor/Acceptor Diazo Compounds
作者:Arianne C. Hunter、Kiran Chinthapally、Indrajeet Sharma
DOI:10.1002/ejoc.201600064
日期:2016.5
Rh2(esp)2 has been identified as a highly efficient catalyst for O–H insertion of carboxylic acids into acceptor/acceptor diazocompounds. The insertion reaction proceeds in CH2Cl2 within minutes at room temperature in excellent yields and accommodates carboxylic acids having varying functionalities including amino acids, free alcoholic and phenolic O–H, indole N–H, alkenes, alkynes, and substituted
Direct ionic liquid promoted organocatalyzed diazo-transfer reactions: diversity-oriented synthesis of diazo-compounds
作者:Dhevalapally B. Ramachary、Vidadala V. Narayana、Kinthada Ramakumar
DOI:10.1016/j.tetlet.2008.02.159
日期:2008.4
A practical and novel ionic liquid promoted organocatalytic selective diazo-transfer process for the synthesis of highly substituted diazo-compounds in high yields is reported. The ionic liquid can be reused without affecting the reaction rates or yields over five runs.
Copper-Catalyzed Carbene Insertion into the Sulfur–Sulfur Bond of RS–SCF2H/SCF3 under Mild Conditions
作者:Xin Hong、Long Lu、Qilong Shen
DOI:10.1055/s-0037-1611839
日期:2019.8
A copper-catalyzed carbene insertion into the sulfur–sulfur bond of trifluoromethyl/difluoromethyl/diphenyldisulfides undermildconditions has been developed. Diverse dithioketal derivatives were synthesized in moderate to good yields in an atom-economic process.
Regioselective Synthesis of Highly Functionalized Furans Through the Ru<sup>II</sup>-Catalyzed [3+2] Cycloaddition of Diazodicarbonyl Compounds
作者:Likai Xia、Yong Rok Lee
DOI:10.1002/ejoc.201402067
日期:2014.6
A novel method for the RuII-catalyzed regioselective synthesis of highly functionalized furans from readily available cyclic and acyclic diazodicarbonyl compounds and terminal alkynes is described. The devised protocol offers a straightforward means to the construction of a variety of diverse furan derivatives through powerful cascade processes, including the formation of ruthenium carbenoid, cyclopropenation
A compound of formula (I) or its enantiomers or diastereoisomers thereof:
1
wherein: A,; X, W, R
1
, Y; R
3
; and R
4
are as defined herein.
The compounds of the invention may be used as inhibitors of the papilloma virus E1-E2-DNA complex. The invention further provides a method of treating or preventing human papilloma virus infection.