Table 3.

Formation of related benzylic oligomers and macrocycles.

Biginelli, Hantzsch Meldrum, and Kamal-Qureshi (Table 4). The target molecules were in general with convenient green approach: without solvent or the use of EtOH as solvent, employing a green catalyst. The reported procedures involved short reaction times and easy workup.

## 2.5 Redox procedures

Important practices, within organic chemistry, are the reduction-oxidation, procedures. Thus, into the green chemistry protocol, several attempts have been developed, particularly within photocatalysis field, for example Guo and coworkers present the photothermic reduction of graphene oxide employing MIR [38].


E Reaction Ref. [29]

Infrared Irradiation, an Excellent, Alternative Green Energy Source

DOI: http://dx.doi.org/10.5772/intechopen.83805

[29]

[30]

[31]

[32]

[33]

[34]

[35, 36]

Infrared Irradiation, an Excellent, Alternative Green Energy Source DOI: http://dx.doi.org/10.5772/intechopen.83805

E Reaction Ref. [24]

Green Chemistry Applications

[24]

[25]

[26]

[26]

[27]

[27]

[28]

with electric muffle furnace and has a fast heating rate the gold-plates improve the energetic efficiency; and in general, the ashing process is completed within 30 min,

Infrared Irradiation, an Excellent, Alternative Green Energy Source

As a complement, in Table 6, several reactions are summarized as described in a previous report [1]. The included processes, in general involve short reaction times, good to excellent yields, the use of a catalyst and solventless conditions, and conse-

E Reaction Ref. 1 [48]

2 [49]

3 [33]

4 [20]

5 [50]

among others [47].

E = Entry, Ref = Reference.

Miscellaneous reactions.

Table 6.

43

quently a green approach is offered.

DOI: http://dx.doi.org/10.5772/intechopen.83805
