TY - JOUR
TI - A Regiocontrolled `Head-to-Tail' [2+2] Photodimerization of a Stilbene involving a Ternary Solid based on Catechol
AU - Giannis S. Papaefstathiou
AU - Tomislav Friščic
AU - Leonard R. MacGillivray
JO - Journal of Supramolecular Chemistry
PY - 2002
VL - 2
TODO - 1-3
SP - 227--231
PB - ELSEVIER BV
SN - 1472-7862
TODO - 10.1016/s1472-7862(03)00077-7
TODO - linear templates, photodimerization
TODO - Co-crystallization of 1,2-dihydroxybenzene (cat) with trans-1-(2-pyridyl)-2-(4-pyridyl)ethylene (2,4-bpe) gives a layered ternary solid, (cat)·(2,4-bpe)·(H2O) 1, with molecular components held together by a combination of O–H⋯N and O–H⋯O forces wherein 2,4-bpe is organized for a ‘head-to-tail’ (ht) [2+2] photocyclodimerization. UV-irradiation of the solid produces rctt-1,3-bis(2-pyridyl)-2,4-bis(4-pyridyl)cyclobutane [rctt-(2,4-tpcb-ht)] in quantitative yield. The structure of rctt-(2,4-tpcb-ht), in the form of crystalline rctt-(2,4-tpcb-ht)·1.5(H2O), has been confirmed by way of single-crystal X-ray diffraction.
ER -