Phosphorus organic synthesis. X. tert-butyl carbamate. An efficient additive in modified curtis reaction by diphenyl phosphorazidate (DPPA).
نویسندگان
چکیده
منابع مشابه
Diphenyl Phosphorazidate (DPPA) − More Than Three Decades Later
More than thirty years have already elapsed since we introduced diphenyl phosphorazidate (diphenylphosphoryl azide, DPPA, (PhO)2P(O)N3) as a reagent for organic synthesis in 1972 (Figure 1). During these years, DPPA has been found to be effective for a variety of organic reactions as a versatile synthetic reagent. It is not too much to say that DPPA has secured an established position as a reag...
متن کاملtert-Butyl N-(thiophen-2-yl)carbamate
In the title compound, C9H13NO2S, the dihedral angle between the thiophene ring and the carbamate group is 15.79 (14)°. In the crystal structure, intra-molecular C-H⋯O inter-actions in tandem with the tert-butyl groups render the packing of adjacent mol-ecules in the [001] direction nearly perpendicular [the angle between adjacent thio-phene rings is 74.83 (7)°]. An inter-molecular N-H⋯O hydrog...
متن کاملBoron trifluoride etherate; highly efficient catalyst for synthesis of tert-butylamides via modified Ritter reaction in solvent free condition
Highly efficient method for the preparation of N-tert-butyl amides by reaction of nitriles with tertbutylacetateis described using boron trifluoride etherate in solvent free condition. Selective amidation ofbenzonitrile in the presence of acetonitrile was also achieved.
متن کاملtert-Butyl N-(4-methyl-2-pyridyl)carbamate
The crystal structure of the title compound, C(11)H(16)N(2)O(2), contains two crystallographically independent mol-ecules forming dimers by pairs of inter-molecular N-H⋯N hydrogen bonds. The two mol-ecules are related by a pseudo-twofold axis. The dihedral angle between the pyridine ring and the carbamate plane differs in the two mol-ecules [12.1 (3) and 3.5 (3)°].
متن کاملtert-Butyl N-[(S)-1-hydrazinecarbonyl-2-hydroxyethyl]carbamate
In the title compound, C(8)H(17)N(3)O(4), the dihedral angle between the hydrazinecarbonyl and carbamate groups is 44.94 (12)°, and the carbonyl groups are anti to each other. In the crystal, the hydr-oxy group forms an O-H⋯N(a) (a = amine) hydrogen bond and each of the four N-H atoms forms an N-H⋯O hydrogen bond; the hydrazinecarbonyl O atom accepts two such bonds. This results in two-dimensio...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Chemical and Pharmaceutical Bulletin
سال: 1975
ISSN: 0009-2363,1347-5223
DOI: 10.1248/cpb.23.1738