Preparation and Reactions of 1,3-Diphosphacyclobutane-2,4-diyls That Feature an Amino Substituent and/or a Carbonyl Group
作者:Hiroki Sugiyama、Shigekazu Ito、Masaaki Yoshifuji
DOI:10.1002/chem.200306069
日期:2004.6.7
characterized from the reaction of 4 with tert-butyllithium and benzoyl chloride. Compound 12 was subsequently heated and underwent rearrangement of the benzoyl group and ring-expansion to afford 1-oxo-1H-[1,3]diphosphole 13. Reaction of 4 with lithium diisopropylamide and benzoyl chloride afforded the 2H-[1,2,4]oxadiphosphinine 15, which was probably formed through the 1,3-diphosphacyclobutane-2,4-diyl intermediate
1-氨基-1,3-二磷环丁烷-2,4-二基和1-苯甲酰基-1,3-二磷环丁烷-2,4-二基的制备和性质被认为是官能化的环状双自由基衍生物。调查。通过反应形成的1-二异丙基氨基-3-甲基-2,4-双(2,4,6-三叔丁基苯基)-1,3-二磷杂环丁烷-2,4-二基(7)的水解Mes * C [三化学键] P(4; Mes * = 2,4,6-tBu(3)C(6)H(2))与二异丙基氨基锂和碘甲烷的合成,导致1,的开环3-二磷环丁烷-2,4-二基骨架以及Mes *环之一的脱芳香化作用。3-Oxo-1,3-二磷丙烯8和7-磷双环[4.2.0] octa-1(8),2,4-三烯9是生成的产物,随后对其进行表征。在TEMPO(2,2,6,6-四甲基-1-哌啶氧基),得到环状二亚甲基膦烷衍生物的第一个实例,即3-氧代-1,3-二膦基-1,4-二烯10。1-苯甲酰基-3-叔丁基-2,4分离出-双(2,4,6-三叔丁基苯基)-1