A Toy Model of Chemical Reaction Networks - TBI - Universität Wien

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6.2. THE FORMOSE REACTION 51
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Figure 6.2: Formaldehyde condensation reaction network. The initial mixture
consists of formaldehyde H 2 CO and glycol aldehyde CH 2 OH − CHO and
reacts via aldol condensations and dismutations. The aldol condensation
was simulated by the condensation of a keto with an enole group. In order
to account for cyclization, which limits the network, we do not permit
carbon chains with more than four members to undergo further aldol condensations.
The network generation algorithm thus converges already after
two iterations. Reaction rates are computed using the proportionality
constant ξ for nucleophilic substitution from [71]. The correlation used is
∆E ‡ = 28/∆E FMO − 10.
Experiment [115]. It is thus conceivable that the formose reaction is the
origin of biological sugars.
The network produced by the Toy Model is shown in Fig. 6.2. It is built