894104-86-0Relevant articles and documents
Cyclic tetramer of a metalloporphyrin based on a quadruple hydrogen bond
Ohkawa, Haruki,Takayama, Akihiro,Nakajima, Satoshi,Nishide, Hiroyuki
, p. 2225 - 2228 (2006)
This paper describes the selective formation of a cyclic tetramer from a readily synthesized metalloporphyrin with two self-complementary quadruple hydrogen-bonding units. The extremely strong quadruple hydrogen-bonding unit, 2-ureido-4[1H]-pyrimidinone,