An Efficient Synthesis of 7-(Arylmethyl)-3-tert-butyl-1-phenyl-6,7-dihydro-1H,4H-pyrazolo[3,4-d][1,3]oxazines

2010 ◽  
Vol 2010 (33) ◽  
pp. 6454-6463 ◽  
Author(s):  
Rodrigo Abonia ◽  
Juan Castillo ◽  
Braulio Insuasty ◽  
Jairo Quiroga ◽  
Manuel Nogueras ◽  
...  
2016 ◽  
Vol 18 (8) ◽  
pp. 2323-2330 ◽  
Author(s):  
Priyanka Chaudhary ◽  
Surabhi Gupta ◽  
Nalluchamy Muniyappan ◽  
Shahulhameed Sabiah ◽  
Jeyakumar Kandasamy

N-Nitrosation of secondary amines was accomplished in an efficient manner using tert-butyl nitrite under solvent, metal and acid free conditions.


2015 ◽  
Vol 48 (12) ◽  
pp. 835-839 ◽  
Author(s):  
Samer S. Ratrout ◽  
Ala’eddine M. Al Sarabi ◽  
Kamal A. Sweidan

ChemInform ◽  
2005 ◽  
Vol 36 (39) ◽  
Author(s):  
John Y. L. Chung ◽  
Raymond Cvetovich ◽  
Joseph Amato ◽  
J. Christopher McWilliams ◽  
Robert Reamer ◽  
...  

1988 ◽  
Vol 53 (11) ◽  
pp. 2778-2786 ◽  
Author(s):  
Leif Grehn ◽  
Ulf Ragnarsson

An efficient synthesis of benzyl tert-butyl iminodicarbonate (IV), starting from benzoyl isocyanate, is reported. Reaction of the isocyanate with benzyl alcohol gave benzyl N-benzoylcarbamate (II) which on exhaustive tert-butoxycarbonylation via the non-isolated triacyl amine III, after aminolysis, provided the title compound. The sodium salt V was alkylated with various halides under Gabriel conditions to give in high yields the corresponding benzyloxycarbonyl tert-butoxycarbonyl diprotected amines. Similarly, compound IV was alkylated with alcohols under Mitsunobu conditions to give some additional amines of this type, from which the protecting groups can be removed selectively under mild conditions.


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