6533b872fe1ef96bd12d418e

RESEARCH PRODUCT

Novel examples of the N-methyl effect on cyclisations of N-Boc derivatives of amino alcohols. A theoretical study

Elena Zaballos-garcíaSalvador GilEl Mestafa El HadramiA. HamdachLuis R. DomingoJosé Sepúlveda-arquesPau ArroyoMaria Luisa Testa

subject

CarbamateNucleophileStereochemistryChemistrymedicine.medical_treatmentOrganic ChemistryDrug DiscoveryThorpe–Ingold effectAb initiomedicineBiochemistry

description

New examples of the N-methyl effect on the cyclisation of N-tert-butoxycarbonyl derivatives of amino alcohols are reported. Ab initio studies for the displacement step with formation of the five-membered heterocycle indicate that the increase of the nucleophile character of the carbonyl oxygen of the carbamate group with the N-methyl substitution is responsible for the acceleration of the cyclisation step.

https://doi.org/10.1016/j.tet.2004.10.038