trans-4-[(Phenyl­sulfon­yloxy)meth­yl]cyclo­hexa­necarboxylic acid

The title compound, C14H18O5S, is an important inter­mediate for the synthesis of poly(amido­amine) dendrimers. The cyclo­hexane ring adopts a chair conformation with its two substituents in equatorial positions. In the crystal structure, mol­ecules form centrosymmetric dimers via O—H⋯O hydrogen bonds

trans-4-(Tosyl­oxymeth­yl)cyclo­hexane­carboxylic acid

The title compound, C15H20O5S, is an inter­mediate in the synthesis of a new type of poly(amido­amine) (PAMAM) dendrimer. The cyclo­hexane ring exhibits a chair conformation, with C—C bond lengths in the range 1.518 (3)–1.531 (3) Å and C—C—C angles in the range 110.45 (19)–112.09 (19)°; these agree well with the values in other cyclo­hexane derivatives described in the literature. In the crystal structure, adjacent mol­ecules are linked by O—H⋯·O hydrogen bonds. The H atoms of the methyl group are disordered equally over two positions

Synthesis and characterization of naphthalimide-functionalized polynorbornenes

ABSTRACT: Highly fluorescent and photostable (2-alkyl)-1H-benzo[de]isoquinoline-1,3(2H)-diones with a polymerizable norbornene scaffold have been synthesized and polymerized using ring-opening metathesis polymerization. The monomers presented herein could be polymerized in a living fashion, using different comonomers and different monomer ratios. All obtained materials showed good film-forming properties and bright fluorescence caused by the incorporated push–pull chromophores. Additionally, one of the monomers containing a methylpiperazine functionality showed protonation-dependent photoinduced electron transfer which opens up interesting applications for logic gates and sensing. GRAPHICAL ABSTRACT: [Image: see text