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CONCLUSIONS: ≥ 97% organic carbonates with glycerol acetals

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(1)

0 10 20 30 40 50 60 70 0 20 40 60 80 100

Pressure (bar)

Conversion

(%

)

0 20 40 60 80 100

Selectivity (%

)

The process plausibly occurs

in supercritical phase

For the DMC: Tc= 284 °C Pc= 48 bar

dc=4 g/mL

M. Selva, A. Perosa, S. Guidi

Department of Molecular Sciences and Nanosystems, Centre for Sustainable Technologies, Università Ca’ Foscari Venezia, Dorsoduro 2137 – 30123 – Venezia (Italy)

REFERENCES:

Glicerol formal (GlyF)

*Conversion

*Selectivity

≥ 97%

DMC

*With a single recycle

of the mixture

CONCLUSIONS:

• Continuous-flow

transesterification

• Pure thermal reactions

(Catalyst-Free)

• Plausibly, a supercritical

phase is needed

• Synthetic extension to

different acetals and

carbonates

Non Catalytic Continuous-flow transesterification of

organic carbonates with glycerol acetals

[1]

[2]

From Biomass Acetalization

[3]

[4]

Reactions performed in

an empty

capillary reactor

Conv = 86% Sele = 98% Conv = 81% Sele = 97% Conv = 95% Sele = 98% Conv = 75% Sele = 98% Conv = 91% Sele = 98% Conv = 40% Sele = 98%

[1] Selva, M.; Noe, M.; Guidi, S., Green Chemistry, 2014.

[2] Vanlaldinpuia, K.; Bez, G., Tetrahedron Letters, 2011, 52, 3759-3764.

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