Model novolac resins which contain the maximum number of free ortho positions for reaction with the curing agent hexamethylenetetramine (HMTA) have been prepared. The key transformation was the ion assisted ortho-specific phenol-formaldehyde oligomerization of suitably protected precursors.
Model novolac resins which contain the maximum number of free ortho positions for reaction with the curing agent hexamethylenetetramine (HMTA) have been prepared. The key transformation was the ion assisted ortho-specific phenol-formaldehyde oligomerization of suitably protected precursors.
de Bruyn Pauline J., Lim Audrey S. C., Looney Mark G., Solomon David H., Tetrahedron Lett, 35 (1994) N 26, S 4627-4630
作者:de Bruyn Pauline J., Lim Audrey S. C., Looney Mark G., Solomon David H.
DOI:——
日期:——
Strategic synthesis of model novolac resins
作者:Pauline J. de Bruyn、Audrey S.C. Lim、Mark G. Looney、David H. Solomon
DOI:10.1016/s0040-4039(00)60747-5
日期:1994.6
Model novolac resins which contain the maximum number of free ortho positions for reaction with the curing agent hexamethylenetetramine (HMTA) have been prepared. The key transformation was the ion assisted ortho-specific phenol-formaldehyde oligomerization of suitably protected precursors.
The chemistry of novolac resins. Part 4. The strategic synthesis of model compounds
作者:Pauline J. de Bruyn、Linda M. Foo、Audrey S.C. Lim、Mark G. Looney、David H. Solomon
DOI:10.1016/s0040-4020(97)00903-4
日期:1997.10
An ion assisted ortho-specific phenol-formaldehyde condensation process, incorporating selective protecting-deprotecting methodology has been adapted to prepare a range of model novolac compounds which are ideal for studying crosslinking with hexamethylenetetramine. (C) 1997 Elsevier Science Ltd.