Polycyclic trisaminomethanes of the formula ##STR1## in which R.sup.1 and R.sup.2, alike or different, are alkylene; R.sup.3 and R.sup.4, alike or different, are alkyl, cycloalkyl, or aralkyl; or R.sup.3 and R.sup.4 are joined together to form an alkylene group which may be interrupted by (1) ##STR2## WHERE Q is hydrogen or alkyl, or (2) ONE OR TWO --O-- linkages; and There are at least 2 carbons between each two hetero atoms in the outer ring system, are useful as initiators for the polymerization of pivalolactone. These polycyclic trisaminomethanes are prepared by reacting a polyamine of the formula R.sup.3 NHR.sup.1 NHR.sup.2 NHR.sup.4 with a dialkoxy(dialkylamino)methane of the formula (RO).sub.2 CHNR'.sub.2 in which R and R', alike or different, are alkyl.
Tricyclic orthoamides: Effects of lone-pair orientation upon NMR spectra
作者:Gary R. Weisman、Van Johnson、Robert E. Fiala
DOI:10.1016/s0040-4039(00)78731-4
日期:1980.1
Simple Preparations of Tricyclic Orthoamides and Macrocyclic Triamines
作者:Robert Du Ho Kim、Michele Wilson、John Haseltine
DOI:10.1080/00397919408011324
日期:1994.11
Hexahydropyrimidopyrimidine 3 is condensed with an alkyl ditosylate 4 at room temperature in DME or toluene. The resulting tricyclic salt is reduced with sodium borohydride to provide orthoamides 6a-c. Acidic hydrolysis of these orthoamides gives the corresponding macrocyclic triamines 8a-c in high yield.
ATKINS T. J., J. AMER. CHEM. SOC., 1980, 102, NO 20, 6364-6365