Etherspaltung an Pyridinen mit ungew�hnlichem Halogenierungsverlauf zu isomeren Diamino-pyridon-carbonitrilen und ihre Verwendung als Kupplungskomponenten
The G−C DNA Base Hybrid: Synthesis, Self-Organization and Structural Analysis
摘要:
The guanine-cytosine base hybrid 1 is synthesized in five steps from the malononitrile dimer. One face of the molecule possesses the cytosine AAD hydrogen bonding code and the other the guanine DDA code. The expression of this information leads to the self-organization of six molecules of 1 into a hexagonal supermacrocycle in the solid state through the formation of 18 strong hydrogen bonds. This is the first structurally characterized example of a synthetic hexagonal assembly where the molecular program is unambiguous and all of the information required for exclusive rosette formation is contained within hydrogen bonding codes. 1 crystallizes in the very rare, high-symmetry cubic space group , with 96 molecules in the unit cell. The crystal is highly solvated and only ca. 35% occupied by molecules of 1, with a criss-crossed network of channel voids generated by the overlapping of 1(6) hexamers.
The G−C DNA Base Hybrid: Synthesis, Self-Organization and Structural Analysis
作者:Mark Mascal、Nicholas M. Hext、Ralf Warmuth、James R. Arnall-Culliford、Madeleine H. Moore、Johan P. Turkenburg
DOI:10.1021/jo990719t
日期:1999.11.1
The guanine-cytosine base hybrid 1 is synthesized in five steps from the malononitrile dimer. One face of the molecule possesses the cytosine AAD hydrogen bonding code and the other the guanine DDA code. The expression of this information leads to the self-organization of six molecules of 1 into a hexagonal supermacrocycle in the solid state through the formation of 18 strong hydrogen bonds. This is the first structurally characterized example of a synthetic hexagonal assembly where the molecular program is unambiguous and all of the information required for exclusive rosette formation is contained within hydrogen bonding codes. 1 crystallizes in the very rare, high-symmetry cubic space group , with 96 molecules in the unit cell. The crystal is highly solvated and only ca. 35% occupied by molecules of 1, with a criss-crossed network of channel voids generated by the overlapping of 1(6) hexamers.
Etherspaltung an Pyridinen mit ungew�hnlichem Halogenierungsverlauf zu isomeren Diamino-pyridon-carbonitrilen und ihre Verwendung als Kupplungskomponenten