Heteroaryl boronic acids and esters are extremely important and valuable intermediates because of their wide application in the synthesis of marketed drugs and bioactive compounds. Over the last couple of decades, the construction of highly important heteroaryl carbon‐boron bonds has created huge attention. The transition‐metal‐free protocols are more green, less sensitive to air and moisture, and also economically advantageous over the transition‐metal‐based protocols. The transition‐metal‐free C−H borylation of heteroarenes and C−X (X=halogen) borylation of heteroaryl halides represents an excellent approach for their synthesis. Also, various cyclization and alkyne activation protocols have been recently established for their synthesis. The goal of this review article is to summarize the existing literature and the current state of the art for transition‐metal‐free synthesis of heteroaryl boronic acid and esters.

Bangladeshi shrimp aquaculture has shown to be successful and efficient at earning foreign cash. The country covers 147570 square kilometers, 17% of which is roughly made up of coastal brackish water. Shrimp farming is thought to be more favorable in this larger coastal tide area, and 0.276 million hectares of land are being used for brackish water shrimp farming. The coastal area offers the best prospects for shrimp and prawn cultivation for two key reasons. The mangrove ecosystems' distinctive biodiversity is the first justification, and a shrimp-friendly habitat is the second.  A large number of fishing vessels are sent out into the seas in order to mine shrimp which is undoubtedly considered a challenging job. Therefore, growing shrimp in tanks, especially in tropical regions, is more sensible for farmers. In this paper, we have developed an IoT-based solution that connects devices to collect data on shrimp farms, and sensing equipment and then sends it to a distant server to analyze and generate decisions. This smart farm offers real-time agriculture monitoring. The main components of the system are three embedded sensors to assess the temperature, turbidity, and light that impact the quality of the water. The system also incorporates of an android-based mobile application that facilitates farmers with remote monitoring capabilities to keep track of sensor readings, manage the shrimp production cycle, and check on the health of shrimp from different farms.

Organoboron compounds are highly important and versatile synthetic intermediates for the preparation of a wide range of organic molecules. Organoboron compounds have drawn significant attention among organic chemists due to their Lewis acidic property, non-toxicity, and commercial availability. Over the last several decades, there has been a substantial development of new organoboron compounds, useful in organic synthesis. Among all other organoboron compounds, β-boryl carbonyl compounds are the important ones. The β-boryl compounds have appeared as promising intermediates for various synthetic transformations. The 1,4-conjugate addition of diboron reagents to carbon-carbon double bond in the presence of different transition-metal catalysts has been extensively reported by various research groups across the globe. This mini-review outlines the numerous racemic as well as asymmetric β-borylation methods developed to date.

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