Visible light triggered, catalyst free approach for the synthesis of thiazoles and imidazo[2,1-b]thiazoles in EtOH : H2O green medium

Mishra Anu; Srivastava Madhulika; Rai Pratibha; Yadav Snehlata; Tripathi Bhartendu Pati; Singh Jaya; Singh Jagdamba

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Visible light triggered, catalyst free approach for the synthesis of thiazoles and imidazo[2,1-b]thiazoles in EtOH : H2O green medium

机译：可见光触发，无催化剂，在EtOH：H2O绿色介质中合成噻唑和咪唑并[2,1-b]噻唑

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The development of a visible light promoted, mild and greener approach for the synthesis of highly functionalized thiazoles and imidazo[2,1-b]thiazoles under photochemical activation in EtOH : H2O green medium is demonstrated. The characteristic feature of the present protocol is the utilization of visible light (an omnipresent, nontoxic, environmentally benign and inexpensive reagent) to form C-S and C-N bonds and circumvent the use of catalysts or photosensitizers. The reported protocol is the first example of visible light promoted synthesis of thiazoles and imidazo[2,1-b]thiazoles with various attractive features like being catalyst free, eco-efficient and possessing cost effectiveness, short reaction time, excellent yields and sustainability to fulfill the parameters of green chemistry.

机译：证明了在EtOH：H2O绿色介质中在光化学活化下合成高功能化噻唑和咪唑并[2,1-b]噻唑的可见光促进，温和，绿色方法的发展。本协议的特征是利用可见光（无所不在，无毒，对环境无害且廉价的试剂）形成C-S和C-N键，并避免使用催化剂或光敏剂。所报道的方案是可见光促进噻唑和咪唑并[2,1-b]噻唑的合成的第一个例子，噻唑和咪唑并[2,1-b]噻唑具有多种吸引人的特征，如无催化剂，生态效率高，具有成本效益，反应时间短，产率高和可持续性。符合绿色化学的参数。

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《RSC Advances》 |2016年第54期|共9页
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Mishra Anu; Srivastava Madhulika; Rai Pratibha; Yadav Snehlata; Tripathi Bhartendu Pati; Singh Jaya; Singh Jagdamba;
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1. Visible light triggered, catalyst free approach for the synthesis of thiazoles and imidazo[2,1-b]thiazoles in EtOH : H2O green medium [J] . Mishra Anu, Srivastava Madhulika, Rai Pratibha, RSC Advances . 2016,第54期

机译：可见光触发，无催化剂，在EtOH：H2O绿色介质中合成噻唑和咪唑并[2,1-b]噻唑
2. Visible-light-activated C–C and C–N bond formation in the synthesis of imidazo[1,2-a]pyridines and imidazo[2,1-b]thiazoles under catalyst and solvent-free conditions [J] . Km Neha Shivhare, Manish K. Jaiswal, Anushree Srivastava, New Journal of Chemistry . 2018,第20期

机译：可见光活化的C-C和C-N键在合成咪唑吡啶和咪唑[2,1-B]噻唑和无溶剂条件下的合成中的C-N键形成
3. On water catalyst-free synthesis of benzo[d]imidazo[2,1-b] thiazoles and novel N-alkylated 2-aminobenzo[d]oxazoles under microwave irradiation [J] . Mukku Narasimharao, Maiti Barnali RSC Advances . 2020,第2期

机译：在微波辐射下的水催化合成苯并[D]咪唑[2,1-B]噻唑和新的N-烷基化2-氨基苯基[D]恶唑
4. Green Catalyst of Nano Zirconia doped ZnO: Synthesis, Characterization and Photo-mineralization under UV/Visible Light [C] . Sudarkodi Raman, Veena Regupathy, Srimathi Krishnaswamy, TMS annual meeting exhibition . 2013

机译：纳米氧化锆掺杂ZnO的绿色催化剂：紫外/可见光下的合成，表征和光矿化
5. New developments toward the synthesis of heterocycles and applications in green chemistry. I. A simple and essentially one-pot synthesis of N-aminated heterocycles using phase transfer catalyst (Aliquat-336). II. Synthesis of pharmaceutically important pyrrole derivatives. III. Applications in green chemistry: Surfactant-mediated environmentally friendly cleavage of aromatic esters and trans-esterification under solvent-free neutral conditions . [D] . Patel, Nitinchandra. 2005

机译：杂环合成的新进展及其在绿色化学中的应用。 I.使用相转移催化剂（Aliquat-336）简单且基本上一锅合成N-胺化的杂环。二。药学上重要的吡咯衍生物的合成。三，在绿色化学中的应用：在无溶剂的中性条件下，表面活性剂介导的环境友好的芳族酯裂解和酯交换反应。
6. Catalyst-Free Synthesis of Polysubstituted 5-Acylamino-13-Thiazoles via Hantzsch Cyclization of α-Chloroglycinates [O] . Mara Tomassetti, Gabriele Lupidi, Pamela Piermattei, 2019

机译：α-氯代甘氨酸盐的Hantzsch环化反应无催化剂地合成多取代的5-Acylamino-13-Thiazoles
7. On water catalyst-free synthesis of benzodimidazo2,1-b thiazoles and novel N-alkylated 2-aminobenzodoxazoles under microwave irradiation [O] . Narasimharao Mukku, Barnali Maiti 2020

机译：在微波辐射下的水催化合成苯并D咪唑2,1-B噻唑和新的N-烷基化2-氨基苯基D恶唑

Visible light triggered, catalyst free approach for the synthesis of thiazoles and imidazo[2,1-b]thiazoles in EtOH : H2O green medium

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