1. Synthesis and reactivity of a new methylenephosphine
2. N2-Elimination from a [3 + 2]-Cycloadduct of Diazoalkane and Amino(methylene)phosphane to give a ?3-Phosphirane
3. Full details of the synthesis and characterization of all new compounds will be reported in forthcoming papers.31P chemical shifts (in ppm from H3PO4).1: 309.9; 2: 305.5; 3: 102.6; 4: 157.4; 5: 173.9; 6: 154.9, −5.9 (JPP= 227); 7: 59.9, 61.9; 8: −51.5; 9: 36.9, 26.2 (JPP= 287); 10: 47.4; 11: −23.3, −38.6 (JPP= 97); 12: 317.0; 13: 381.0; 14: 139.9; 15: 120.0; 16: 191.9; 17: 2.6; 18: −20.1; 19: 6.6; 20: −42.9.
4. Synthesis and reactivity of some p-mesityl-substituted phosphorus compounds