RT info:eu-repo/semantics/article
T1 Building formamide and N-substituted formamides from isocyanates on hydrogenated water ices
A1 Tieppo, N.
A1 Redondo, P.
A1 Pauzat, F.
A1 Parisel, O.
A1 Guillemin, J.-C.
A1 Ellinger, Y.
AB In recent years, the continued detection of complex organic molecules of prebiotic interest has refueled the interest in a panspermic origin of life. The prebiotic molecule glyceraldehyde is proposed to be formed from (Z)-1,2- ethenediol, a molecule recently detected toward the G+0.693-0.027 molecular cloud at the galactic center. In this work, we computationally simulate the formation of (Z)-1,2-ethenediol from vinyl alcohol on the surface of amorphous solid water in a two-step synthesis involving an OH addition and an H abstraction reaction. In total, we considered all reaction possibilities of the 1,1- and 1,2-OH addition to vinyl alcohol followed by H abstraction or H addition reactions on the resulting radicals. The combination of these reactions is capable of explaining the formation of (Z)-1,2-ethenediol provided a suprathermal diffusion of OH. We also conclude that our proposed formation pathway is not selective and also yields other abstraction and addition products. Key in our findings is the connection between the adsorption modes of the reactants and intermediates and the stereoselectivity of the reactions.
SN 0004-6361
YR 2025
FD 2025
LK https://uvadoc.uva.es/handle/10324/80094
UL https://uvadoc.uva.es/handle/10324/80094
LA spa
NO The Astrophysical Journal, 2024, 974, 129 (12pp).
DS UVaDOC
RD 30-nov-2025