The review summarizes the publications devoted to the synthesis of pyrrolo[2,1-b]thiazoles with a various degree of saturation and substitution over the last 10 years. The synthesis methods are conditionally divided into three groups depending on the starting compounds: modification of thiazole derivatives, modification of derivatives of other heterocycles, as well as synthesis from acyclic compounds. 
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, 2020, 56(2), 164–166
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Grinev, V.S., Egorova, A.Y. 
Synthesis of pyrrolo[2,1-b]thiazole derivatives (microreview).
Chem Heterocycl Comp 56, 164–166 (2020). https://doi.org/10.1007/s10593-020-02639-y
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DOI: https://doi.org/10.1007/s10593-020-02639-y