Muhammad Anwar Iqbal

An efficient method for the preparation of benzyl γ-ketohexanoates

Twenty acid chlorides, 4-(mono/di-benzyloxy)-4-ketobutanoyl chlorides (Ia–XXa) were synthesised by the reaction of monoesters of succinic acid with thionyl chloride. The product thus obtained (4-benzyloxy-4-ketobutanoyl chlorides) was treated with diethylcadmium to convert it into the corresponding keto-esters (Ib–XXb), the mono/di-benzyl-γ-ketohexanoates, with a good yield. All the compounds thus prepared were characterised by physical, spectroscopic (UV-VIS, IR, 1H NMR, 13C NMR), and mass measurements techniques.

Pakistan tourism industry and challenges: a review

ABSTRACT Travel and tourism has great association with other industries in the national economy making major indirect earns and also enhances foreign investment, opportunities of trade, investments in private, local development, and public infrastructure. Pakistan has rich potential of tourism due to its rich culture, geographical and biological diversity, and history. Tourism has developed as an instrument for creating considerable economic gains. The country has various tourist destinations at Swat, Malam Jabba, Behrain, Kalam, Shangla, Balakot, Kaghan, Naran, Ayoubia, Murree, Chitral, Gilgit Baltistan, Hunza, and Neelam valleys, other mountainous ranges, and historical and archaeological sites. Pakistan has great potential and offers diverse opportunities for tourists, such as trout fishing in the glacial water of Gilgit Baltistan and Swat rivers, Shandur Polo traditional tournament, paragliding, rock climbing, and trekking in northern areas, Jeep and camel safari in the Cholistan desert, Wild Boar hunting, and crabbing in the Arabian Sea.