Unknown

Dataset Information

0

Different hydrogen-bonded chains in the crystal structures of three alkyl N-[(E)-1-(2-benzyl-idene-1-methyl-hydrazin-yl)-3-hy-droxy-1-oxopropan-2-yl]carbamates.


ABSTRACT: The crystal structures of three methyl-ated hydrazine carbamate derivatives prepared by multi-step syntheses from l-serine are presented, namely benzyl N-{(E)-1-[2-(4-cyanobenzylidene)-1-methylhydrazinyl]-3-hydroxy-1-oxopro-pan-2-yl}carbamate, C20H20N4O4, tert-butyl N-{(E)-1-[2-(4-cyanobenzylidene)-1-methylhydrazinyl]-3-hydroxy-1-oxopropan-2-yl}carbamate, C17H22N4O4, and tert-butyl N-[(E)-1-(2-benzylidene-1-methylhydrazinyl)-3-hydroxy-1-oxopro-pan-2-yl]carbamate, C16H23N3O4. One of them shows that an unexpected racemization has occurred during the mild-condition methyl-ation reaction. In each crystal structure, the mol-ecules are linked into chains by O-H⋯O hydrogen bonds, but with significant differences between them.

SUBMITTER: Noguiera TC 

PROVIDER: S-EPMC4518986 | biostudies-literature |

REPOSITORIES: biostudies-literature

Similar Datasets

| S-EPMC3011551 | biostudies-literature
| S-EPMC3470239 | biostudies-literature
| S-EPMC3151747 | biostudies-literature
| S-EPMC3201493 | biostudies-literature
| S-EPMC3998297 | biostudies-literature
| S-EPMC2979574 | biostudies-literature
| S-EPMC4778811 | biostudies-literature
| S-EPMC4384580 | biostudies-literature
| S-EPMC3770428 | biostudies-literature
| S-EPMC3213592 | biostudies-literature